|
Hi frnz,
i want to customize visibility of folderBrowserDialog1 as per my requirements..
I want my folder dialog must not display "OK" and "Cancel" buttons..
by default, it has to perform actions while we are clicking "OK" button.
please help me...
Thanks in Advance,
Regards,
Hari.A.
hari | | Hari.A Tuesday, September 29, 2009 6:20 AM | Hi Hari.A, We need to create our own FolderBrowserDialog to do some custom things. The sample below shows anextended FolderBrowserDialog: http://69.10.233.10/KB/dialog/ExtendedFolderBrowser.aspxRegards, Aland Li
Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread. - Marked As Answer byAland LiMSFT, ModeratorWednesday, October 07, 2009 2:09 AM
-
| | Aland Li Wednesday, September 30, 2009 9:47 AM | Hi Hari.A,
I have modified the code of the ExtendedFolderBrowser class which is included in the project I provided in the last reply:
http://69.10.233.10/KB/dialog/ExtendedFolderBrowser.aspx.
When you call the ShowDialog method of the modified ExtendedFolderBrowser class, the OK and Cancel buttons are hidden.
This is the modified code:
using System;
using System.Windows.Forms;
using System.ComponentModel;
using System.Security;
using System.Runtime.InteropServices;
using System.Text;
namespace FolderBrowser
{
public delegate bool ShowNewButtonHandler(string selectedPath);
/// Created By: Goldberg Royee
/// Date: 6/8/2006
/// Reason: This class is an extended class
/// for the folderBrowseDialog of .NET.
/// This class add a functionality to disable the 'Make New Folder' Button
/// whenever a CD path selected.
public class ExtendedFolderBrowser
{
#region Win32API Class
/// <summary>
///
/// </summary>
private class Win32API
{
[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SHBrowseForFolder([In] BROWSEINFO lpbi);
[DllImport("shell32.dll")]
public static extern int SHGetMalloc([Out, MarshalAs(UnmanagedType.LPArray)] IMalloc[] ppMalloc);
[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern bool SHGetPathFromIDList(IntPtr pidl, IntPtr pszPath);
[DllImport("shell32.dll")]
public static extern int SHGetSpecialFolderLocation(IntPtr hwnd, int csidl, ref IntPtr ppidl);
[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, string lParam);
[DllImport("user32.dll", EntryPoint="SendMessage", CharSet=CharSet.Auto)]
public static extern IntPtr SendMessage2(HandleRef hWnd, int msg, int wParam, int lParam);
[DllImport("user32.dll")]
public static extern bool EnableWindow(IntPtr hWnd,bool bEnable);
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int windowState);
[DllImport("user32.dll") ]
public static extern int GetWindowText(int hWnd, StringBuilder text, int count);
[DllImport("user32.dll") ]
public static extern IntPtr FindWindow(string lpClassName,string lpWindowName);
[DllImport("user32.dll")]
public static extern IntPtr GetWindowThreadProcessId(IntPtr hwnd, IntPtr lpdwProcessId);
[DllImport("user32.dll") ]
public static extern IntPtr FindWindowEx(IntPtr hwndParent,
IntPtr hwndChildAfter,
string lpszClass,
string lpszWindow
);
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto), ComVisible(false)]
public class BROWSEINFO
{
public IntPtr hwndOwner;
public IntPtr pidlRoot;
public IntPtr pszDisplayName;
public string lpszTitle;
public int ulFlags;
public BrowseCallbackProc lpfn;
public IntPtr lParam;
public int iImage;
}
[ComImport, Guid("00000002-0000-0000-c000-000000000046"), SuppressUnmanagedCodeSecurity, InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IMalloc
{
IntPtr Alloc(int cb);
void Free(IntPtr pv);
IntPtr Realloc(IntPtr pv, int cb);
int GetSize(IntPtr pv);
int DidAlloc(IntPtr pv);
void HeapMinimize();
}
public const int WM_LBUTTONDOWN = 0x0201;
public const int BFFM_INITIALIZED = 1;
public const int BFFM_SELCHANGED = 2;
public const int SW_HIDE = 0;
public const int SW_SHOW = 5;
public delegate int BrowseCallbackProc(IntPtr hwnd, int msg, IntPtr lParam, IntPtr lpData);
}
#endregion
#region InternalFolderBrowser Class
/// <summary>
///
/// </summary>
private class InternalFolderBrowser : CommonDialog
{
private string m_selectedPath = null;
private Environment.SpecialFolder m_rootFolder;
public event EventHandler SelectedFolderChanged;
public event EventHandler BrowserInitilized;
private string m_descriptionText = String.Empty;
/// <summary>
///
/// </summary>
/// <returns></returns>
private Win32API.IMalloc GetSHMalloc()
{
Win32API.IMalloc[] mallocArray1 = new Win32API.IMalloc[1];
Win32API.SHGetMalloc(mallocArray1);
return mallocArray1[0];
}
/// <summary>
///
/// </summary>
public override void Reset()
{
m_rootFolder = Environment.SpecialFolder.Desktop;
m_selectedPath = string.Empty;
}
/// <summary>
///
/// </summary>
/// <param name="hwndOwner"></param>
/// <returns></returns>
protected override bool RunDialog(System.IntPtr hwndOwner)
{
IntPtr ptr1 = IntPtr.Zero;
bool flag1 = false;
Win32API.SHGetSpecialFolderLocation(hwndOwner, (int)m_rootFolder, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
Win32API.SHGetSpecialFolderLocation(hwndOwner, 0, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
throw new Exception("FolderBrowserDialogNoRootFolder");
}
}
//Initialize the OLE to current thread.
Application.OleRequired();
IntPtr ptr2 = IntPtr.Zero;
try
{
Win32API.BROWSEINFO browseinfo1 = new Win32API.BROWSEINFO();
IntPtr ptr3 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
IntPtr ptr4 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
Win32API.BrowseCallbackProc proc1 = new Win32API.BrowseCallbackProc(this.FolderBrowserDialog_BrowseCallbackProc);
browseinfo1.pidlRoot = ptr1;
browseinfo1.hwndOwner = hwndOwner;
browseinfo1.pszDisplayName = ptr3;
browseinfo1.lpszTitle = m_descriptionText;
browseinfo1.ulFlags = 0x40;
browseinfo1.lpfn = proc1;
browseinfo1.lParam = IntPtr.Zero;
browseinfo1.iImage = 0;
ptr2 = Win32API.SHBrowseForFolder(browseinfo1);
string s = Marshal.PtrToStringAuto(ptr3);
if (ptr2 != IntPtr.Zero)
{
Win32API.SHGetPathFromIDList(ptr2, ptr4);
this.m_selectedPath = Marshal.PtrToStringAuto(ptr4);
Marshal.FreeHGlobal(ptr4);
Marshal.FreeHGlobal(ptr3);
flag1 = true;
}
}
finally
{
Win32API.IMalloc malloc1 = GetSHMalloc();
malloc1.Free(ptr1);
if (ptr2 != IntPtr.Zero)
{
malloc1.Free(ptr2);
}
}
return flag1;
}
/// <summary>
///
/// </summary>
/// <param name="hwnd"></param>
/// <param name="msg"></param>
/// <param name="lParam"></param>
/// <param name="lpData"></param>
/// <returns></returns>
private int FolderBrowserDialog_BrowseCallbackProc(IntPtr hwnd, int msg, IntPtr lParam, IntPtr lpData)
{
switch (msg)
{
case Win32API.BFFM_INITIALIZED:
if (m_selectedPath != string.Empty)
{
Win32API.SendMessage(new HandleRef(null, hwnd), 0x467, 1, m_selectedPath);
if (BrowserInitilized != null)
BrowserInitilized(this, null);
}
break;
case Win32API.BFFM_SELCHANGED: //Selction Changed
{
IntPtr ptr1 = lParam;
if (ptr1 != IntPtr.Zero)
{
IntPtr ptr2 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
bool flag1 = Win32API.SHGetPathFromIDList(ptr1, ptr2);
m_selectedPath = Marshal.PtrToStringAuto(ptr2);
//Fire Event
if(SelectedFolderChanged != null)
{
SelectedFolderChanged(this,null);
}
Marshal.FreeHGlobal(ptr2);
Win32API.SendMessage2(new HandleRef(null, hwnd), 0x465, 0, flag1 ? 1 : 0);
}
break;
}
}
return 0;
}
/// <summary>
///
/// </summary>
public string SelectedPath
{
get
{
return m_selectedPath;
}
}
/// <summary>
///
/// </summary>
public string Description
{
get
{
return m_descriptionText;
}
set
{
m_descriptionText = (value == null) ? string.Empty : value;
}
}
}
#endregion
#region Private Members
private InternalFolderBrowser m_InternalFolderBrowser = null;
public event EventHandler SelectedFolderChanged;
private const string MAKE_NEW_FOLDER_BUTTON = "&Make New Folder";
private ShowNewButtonHandler m_ShowNewButtonHandler = null;
private const string BROWSE_FOR_FOLDER_CLASS_NAME = "#32770";
private bool m_bShowOkCancel = false;
#endregion
#region CTOR
/// <summary>
///
/// </summary>
public ExtendedFolderBrowser()
{
m_InternalFolderBrowser = new InternalFolderBrowser();
m_InternalFolderBrowser.BrowserInitilized += new EventHandler(m_InternalFolderBrowser_BrowserInitilized);
m_InternalFolderBrowser.SelectedFolderChanged+=new EventHandler(m_InternalFolderBrowser_SelectedFolderChanged);
}
#endregion
#region Helper Methods
/// <summary>
///
/// </summary>
/// <param name="handle"></param>
/// <param name="state"></param>
private void UpdateButtonState(IntPtr handle, bool state)
{
if(handle != IntPtr.Zero)
{
Win32API.ShowWindow(handle, state ? Win32API.SW_SHOW : Win32API.SW_HIDE);
//Win32API.EnableWindow(handle,state);
}
}
//Show or hide the ok cancel buttons.
private void ShowOkCancel(bool isVisible)
{
//Get handlers of ok, cancel button.
//The names need to be localized.
IntPtr ok = GetButtonHandle(IntPtr.Zero, "OK");
IntPtr cancel = GetButtonHandle(IntPtr.Zero, "Cancel");
if (isVisible)
{
//Show the buttons.
Win32API.ShowWindow(ok, Win32API.SW_SHOW);
Win32API.ShowWindow(cancel, Win32API.SW_SHOW);
}
else
{
//Hide the buttons.
Win32API.ShowWindow(ok, Win32API.SW_HIDE);
Win32API.ShowWindow(cancel, Win32API.SW_HIDE);
}
}
/// <summary>
///
/// </summary>
/// <param name="windowHandle"></param>
/// <returns></returns>
private bool isFromTheSameThread(IntPtr windowHandle)
{
//Get the thread that running given handler
IntPtr activeThreadID = Win32API.GetWindowThreadProcessId(windowHandle,
IntPtr.Zero);
//Get current thread
int currentThread = AppDomain.GetCurrentThreadId();
return (currentThread == activeThreadID.ToInt32());
}
private IntPtr GetButtonHandle(IntPtr handle,string name)
{
//First time
if(handle == IntPtr.Zero)
{
//Get Handle for class with name "#32770"
IntPtr parent = Win32API.FindWindow(BROWSE_FOR_FOLDER_CLASS_NAME,null);
//If the window we found is in the same thread we are running
//then it is The 'Browse For Folder' Dialog, otherwise keep searching
if(!isFromTheSameThread(parent))
{
//Keep searching from this point
return GetButtonHandle(parent,name);
}
else
{
return Win32API.FindWindowEx(parent,IntPtr.Zero,"Button", name);
}
}
else
{
//Find next window
IntPtr parent = Win32API.FindWindowEx(IntPtr.Zero,handle,BROWSE_FOR_FOLDER_CLASS_NAME, null);
if(!isFromTheSameThread(parent))
{
return GetButtonHandle(parent, name);
}
else
{
//We found the 'Browse For Folder' Dialog handler.
//Lets return the child handler of 'Maker new Folder' button
return Win32API.FindWindowEx(parent, IntPtr.Zero, "Button", name);
}
}
}
/// <summary>
/// A different version for finding the 'Make New Foler' button handler.
/// We currently don't use this version, because it requires a Localization.
/// </summary>
/// <returns></returns>
private IntPtr GetButtonHandle()
{
//This should be using localization!!!!!!!!!!!!!!!!!#32770 (Dialog)
IntPtr root = Win32API.FindWindow(null,"Browse For Folder");
IntPtr child = Win32API.FindWindowEx(root,IntPtr.Zero,"Button", null);
return child;
}
/// <summary>
/// Check if we should disable the 'Make New Folder' button
/// </summary>
private void CheckState()
{
if(m_ShowNewButtonHandler != null)
{
if(m_ShowNewButtonHandler(SelectedPath))
{
//Disabel the button
UpdateButtonState(GetButtonHandle(IntPtr.Zero,null), false);
}
else
{
//Enable the button
UpdateButtonState(GetButtonHandle(IntPtr.Zero,null),true);
}
}
}
void m_InternalFolderBrowser_BrowserInitilized(object sender, EventArgs e)
{
ShowOkCancel(false);
}
private void m_InternalFolderBrowser_SelectedFolderChanged(object sender, EventArgs e)
{
CheckState();
//Fire event selection has changed in case anyone wants
//to be notified.
if(SelectedFolderChanged != null)
{
SelectedFolderChanged(sender,e);
}
}
#endregion
#region FolderBrowserDialog Mathods
public DialogResult ShowDialog()
{
return ShowDialog(null);
}
public DialogResult ShowDialog(IWin32Window owner)
{
return m_InternalFolderBrowser.ShowDialog(owner);
}
public bool IsOkCancelVisible
{
set
{
m_bShowOkCancel = value;
}
get
{
return m_bShowOkCancel;
}
}
public string SelectedPath
{
get
{
return m_InternalFolderBrowser.SelectedPath;
}
}
public string Description
{
get
{
return m_InternalFolderBrowser.Description;
}
set
{
m_InternalFolderBrowser.Description = value;
}
}
/// <summary>
/// Pass the delegate to your function, which will decide
/// if to enable the 'Make New Folder' button or not.
/// </summary>
public ShowNewButtonHandler SetNewFolderButtonCondition
{
get
{
return m_ShowNewButtonHandler;;
}
set
{
m_ShowNewButtonHandler = value;
}
}
#endregion
}
}
Let me know if this does not help.
Aland Li
Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread. - Marked As Answer byAland LiMSFT, ModeratorWednesday, October 07, 2009 2:09 AM
-
| | Aland Li Monday, October 05, 2009 9:41 AM | Hi Hari.A, We need to create our own FolderBrowserDialog to do some custom things. The sample below shows anextended FolderBrowserDialog: http://69.10.233.10/KB/dialog/ExtendedFolderBrowser.aspxRegards, Aland Li
Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread. - Marked As Answer byAland LiMSFT, ModeratorWednesday, October 07, 2009 2:09 AM
-
| | Aland Li Wednesday, September 30, 2009 9:47 AM | Hi Aland,
Thank you for you're reply..
i am still unable to customize that folder browser dialogue..
i want to hide "Ok" and "Cancel" buttons and functionality must be remained same.
with out specifying any dialog result..,i want to get functionality.
if you can..,explain me in depth please..
thanks,
Regards,
Hari.A
hari | | Hari.A Monday, October 05, 2009 6:37 AM | Hi Hari.A,
I have modified the code of the ExtendedFolderBrowser class which is included in the project I provided in the last reply:
http://69.10.233.10/KB/dialog/ExtendedFolderBrowser.aspx.
When you call the ShowDialog method of the modified ExtendedFolderBrowser class, the OK and Cancel buttons are hidden.
This is the modified code:
using System;
using System.Windows.Forms;
using System.ComponentModel;
using System.Security;
using System.Runtime.InteropServices;
using System.Text;
namespace FolderBrowser
{
public delegate bool ShowNewButtonHandler(string selectedPath);
/// Created By: Goldberg Royee
/// Date: 6/8/2006
/// Reason: This class is an extended class
/// for the folderBrowseDialog of .NET.
/// This class add a functionality to disable the 'Make New Folder' Button
/// whenever a CD path selected.
public class ExtendedFolderBrowser
{
#region Win32API Class
/// <summary>
///
/// </summary>
private class Win32API
{
[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SHBrowseForFolder([In] BROWSEINFO lpbi);
[DllImport("shell32.dll")]
public static extern int SHGetMalloc([Out, MarshalAs(UnmanagedType.LPArray)] IMalloc[] ppMalloc);
[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern bool SHGetPathFromIDList(IntPtr pidl, IntPtr pszPath);
[DllImport("shell32.dll")]
public static extern int SHGetSpecialFolderLocation(IntPtr hwnd, int csidl, ref IntPtr ppidl);
[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, string lParam);
[DllImport("user32.dll", EntryPoint="SendMessage", CharSet=CharSet.Auto)]
public static extern IntPtr SendMessage2(HandleRef hWnd, int msg, int wParam, int lParam);
[DllImport("user32.dll")]
public static extern bool EnableWindow(IntPtr hWnd,bool bEnable);
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int windowState);
[DllImport("user32.dll") ]
public static extern int GetWindowText(int hWnd, StringBuilder text, int count);
[DllImport("user32.dll") ]
public static extern IntPtr FindWindow(string lpClassName,string lpWindowName);
[DllImport("user32.dll")]
public static extern IntPtr GetWindowThreadProcessId(IntPtr hwnd, IntPtr lpdwProcessId);
[DllImport("user32.dll") ]
public static extern IntPtr FindWindowEx(IntPtr hwndParent,
IntPtr hwndChildAfter,
string lpszClass,
string lpszWindow
);
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto), ComVisible(false)]
public class BROWSEINFO
{
public IntPtr hwndOwner;
public IntPtr pidlRoot;
public IntPtr pszDisplayName;
public string lpszTitle;
public int ulFlags;
public BrowseCallbackProc lpfn;
public IntPtr lParam;
public int iImage;
}
[ComImport, Guid("00000002-0000-0000-c000-000000000046"), SuppressUnmanagedCodeSecurity, InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IMalloc
{
IntPtr Alloc(int cb);
void Free(IntPtr pv);
IntPtr Realloc(IntPtr pv, int cb);
int GetSize(IntPtr pv);
int DidAlloc(IntPtr pv);
void HeapMinimize();
}
public const int WM_LBUTTONDOWN = 0x0201;
public const int BFFM_INITIALIZED = 1;
public const int BFFM_SELCHANGED = 2;
public const int SW_HIDE = 0;
public const int SW_SHOW = 5;
public delegate int BrowseCallbackProc(IntPtr hwnd, int msg, IntPtr lParam, IntPtr lpData);
}
#endregion
#region InternalFolderBrowser Class
/// <summary>
///
/// </summary>
private class InternalFolderBrowser : CommonDialog
{
private string m_selectedPath = null;
private Environment.SpecialFolder m_rootFolder;
public event EventHandler SelectedFolderChanged;
public event EventHandler BrowserInitilized;
private string m_descriptionText = String.Empty;
/// <summary>
///
/// </summary>
/// <returns></returns>
private Win32API.IMalloc GetSHMalloc()
{
Win32API.IMalloc[] mallocArray1 = new Win32API.IMalloc[1];
Win32API.SHGetMalloc(mallocArray1);
return mallocArray1[0];
}
/// <summary>
///
/// </summary>
public override void Reset()
{
m_rootFolder = Environment.SpecialFolder.Desktop;
m_selectedPath = string.Empty;
}
/// <summary>
///
/// </summary>
/// <param name="hwndOwner"></param>
/// <returns></returns>
protected override bool RunDialog(System.IntPtr hwndOwner)
{
IntPtr ptr1 = IntPtr.Zero;
bool flag1 = false;
Win32API.SHGetSpecialFolderLocation(hwndOwner, (int)m_rootFolder, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
Win32API.SHGetSpecialFolderLocation(hwndOwner, 0, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
throw new Exception("FolderBrowserDialogNoRootFolder");
}
}
//Initialize the OLE to current thread.
Application.OleRequired();
IntPtr ptr2 = IntPtr.Zero;
try
{
Win32API.BROWSEINFO browseinfo1 = new Win32API.BROWSEINFO();
IntPtr ptr3 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
IntPtr ptr4 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
Win32API.BrowseCallbackProc proc1 = new Win32API.BrowseCallbackProc(this.FolderBrowserDialog_BrowseCallbackProc);
browseinfo1.pidlRoot = ptr1;
browseinfo1.hwndOwner = hwndOwner;
browseinfo1.pszDisplayName = ptr3;
browseinfo1.lpszTitle = m_descriptionText;
browseinfo1.ulFlags = 0x40;
browseinfo1.lpfn = proc1;
browseinfo1.lParam = IntPtr.Zero;
browseinfo1.iImage = 0;
ptr2 = Win32API.SHBrowseForFolder(browseinfo1);
string s = Marshal.PtrToStringAuto(ptr3);
if (ptr2 != IntPtr.Zero)
{
Win32API.SHGetPathFromIDList(ptr2, ptr4);
this.m_selectedPath = Marshal.PtrToStringAuto(ptr4);
Marshal.FreeHGlobal(ptr4);
Marshal.FreeHGlobal(ptr3);
flag1 = true;
}
}
finally
{
Win32API.IMalloc malloc1 = GetSHMalloc();
malloc1.Free(ptr1);
if (ptr2 != IntPtr.Zero)
{
malloc1.Free(ptr2);
}
}
return flag1;
}
/// <summary>
///
/// </summary>
/// <param name="hwnd"></param>
/// <param name="msg"></param>
/// <param name="lParam"></param>
/// <param name="lpData"></param>
/// <returns></returns>
private int FolderBrowserDialog_BrowseCallbackProc(IntPtr hwnd, int msg, IntPtr lParam, IntPtr lpData)
{
switch (msg)
{
case Win32API.BFFM_INITIALIZED:
if (m_selectedPath != string.Empty)
{
Win32API.SendMessage(new HandleRef(null, hwnd), 0x467, 1, m_selectedPath);
if (BrowserInitilized != null)
BrowserInitilized(this, null);
}
break;
case Win32API.BFFM_SELCHANGED: //Selction Changed
{
IntPtr ptr1 = lParam;
if (ptr1 != IntPtr.Zero)
{
IntPtr ptr2 = Marshal.AllocHGlobal((int) (260 * Marshal.SystemDefaultCharSize));
bool flag1 = Win32API.SHGetPathFromIDList(ptr1, ptr2);
m_selectedPath = Marshal.PtrToStringAuto(ptr2);
//Fire Event
if(SelectedFolderChanged != null)
{
SelectedFolderChanged(this,null);
}
Marshal.FreeHGlobal(ptr2);
Win32API.SendMessage2(new HandleRef(null, hwnd), 0x465, 0, flag1 ? 1 : 0);
}
break;
}
}
return 0;
}
/// <summary>
///
/// </summary>
public string SelectedPath
{
get
{
return m_selectedPath;
}
}
/// <summary>
///
/// </summary>
public string Description
{
get
{
return m_descriptionText;
}
set
{
m_descriptionText = (value == null) ? string.Empty : value;
}
}
}
#endregion
#region Private Members
private InternalFolderBrowser m_InternalFolderBrowser = null;
public event EventHandler SelectedFolderChanged;
private const string MAKE_NEW_FOLDER_BUTTON = "&Make New Folder";
private ShowNewButtonHandler m_ShowNewButtonHandler = null;
private const string BROWSE_FOR_FOLDER_CLASS_NAME = "#32770";
private bool m_bShowOkCancel = false;
#endregion
#region CTOR
/// <summary>
///
/// </summary>
public ExtendedFolderBrowser()
{
m_InternalFolderBrowser = new InternalFolderBrowser();
m_InternalFolderBrowser.BrowserInitilized += new EventHandler(m_InternalFolderBrowser_BrowserInitilized);
m_InternalFolderBrowser.SelectedFolderChanged+=new EventHandler(m_InternalFolderBrowser_SelectedFolderChanged);
}
#endregion
#region Helper Methods
/// <summary>
///
/// </summary>
/// <param name="handle"></param>
/// <param name="state"></param>
private void UpdateButtonState(IntPtr handle, bool state)
{
if(handle != IntPtr.Zero)
{
Win32API.ShowWindow(handle, state ? Win32API.SW_SHOW : Win32API.SW_HIDE);
//Win32API.EnableWindow(handle,state);
}
}
//Show or hide the ok cancel buttons.
private void ShowOkCancel(bool isVisible)
{
//Get handlers of ok, cancel button.
//The names need to be localized.
IntPtr ok = GetButtonHandle(IntPtr.Zero, "OK");
IntPtr cancel = GetButtonHandle(IntPtr.Zero, "Cancel");
if (isVisible)
{
//Show the buttons.
Win32API.ShowWindow(ok, Win32API.SW_SHOW);
Win32API.ShowWindow(cancel, Win32API.SW_SHOW);
}
else
{
//Hide the buttons.
Win32API.ShowWindow(ok, Win32API.SW_HIDE);
Win32API.ShowWindow(cancel, Win32API.SW_HIDE);
}
}
/// <summary>
///
/// </summary>
/// <param name="windowHandle"></param>
/// <returns></returns>
private bool isFromTheSameThread(IntPtr windowHandle)
{
//Get the thread that running given handler
IntPtr activeThreadID = Win32API.GetWindowThreadProcessId(windowHandle,
IntPtr.Zero);
//Get current thread
int currentThread = AppDomain.GetCurrentThreadId();
return (currentThread == activeThreadID.ToInt32());
}
private IntPtr GetButtonHandle(IntPtr handle,string name)
{
//First time
if(handle == IntPtr.Zero)
{
//Get Handle for class with name "#32770"
IntPtr parent = Win32API.FindWindow(BROWSE_FOR_FOLDER_CLASS_NAME,null);
//If the window we found is in the same thread we are running
//then it is The 'Browse For Folder' Dialog, otherwise keep searching
if(!isFromTheSameThread(parent))
{
//Keep searching from this point
return GetButtonHandle(parent,name);
}
else
{
return Win32API.FindWindowEx(parent,IntPtr.Zero,"Button", name);
}
}
else
{
//Find next window
IntPtr parent = Win32API.FindWindowEx(IntPtr.Zero,handle,BROWSE_FOR_FOLDER_CLASS_NAME, null);
if(!isFromTheSameThread(parent))
{
return GetButtonHandle(parent, name);
}
else
{
//We found the 'Browse For Folder' Dialog handler.
//Lets return the child handler of 'Maker new Folder' button
return Win32API.FindWindowEx(parent, IntPtr.Zero, "Button", name);
}
}
}
/// <summary>
/// A different version for finding the 'Make New Foler' button handler.
/// We currently don't use this version, because it requires a Localization.
/// </summary>
/// <returns></returns>
private IntPtr GetButtonHandle()
{
//This should be using localization!!!!!!!!!!!!!!!!!#32770 (Dialog)
IntPtr root = Win32API.FindWindow(null,"Browse For Folder");
IntPtr child = Win32API.FindWindowEx(root,IntPtr.Zero,"Button", null);
return child;
}
/// <summary>
/// Check if we should disable the 'Make New Folder' button
/// </summary>
private void CheckState()
{
if(m_ShowNewButtonHandler != null)
{
if(m_ShowNewButtonHandler(SelectedPath))
{
//Disabel the button
UpdateButtonState(GetButtonHandle(IntPtr.Zero,null), false);
}
else
{
//Enable the button
UpdateButtonState(GetButtonHandle(IntPtr.Zero,null),true);
}
}
}
void m_InternalFolderBrowser_BrowserInitilized(object sender, EventArgs e)
{
ShowOkCancel(false);
}
private void m_InternalFolderBrowser_SelectedFolderChanged(object sender, EventArgs e)
{
CheckState();
//Fire event selection has changed in case anyone wants
//to be notified.
if(SelectedFolderChanged != null)
{
SelectedFolderChanged(sender,e);
}
}
#endregion
#region FolderBrowserDialog Mathods
public DialogResult ShowDialog()
{
return ShowDialog(null);
}
public DialogResult ShowDialog(IWin32Window owner)
{
return m_InternalFolderBrowser.ShowDialog(owner);
}
public bool IsOkCancelVisible
{
set
{
m_bShowOkCancel = value;
}
get
{
return m_bShowOkCancel;
}
}
public string SelectedPath
{
get
{
return m_InternalFolderBrowser.SelectedPath;
}
}
public string Description
{
get
{
return m_InternalFolderBrowser.Description;
}
set
{
m_InternalFolderBrowser.Description = value;
}
}
/// <summary>
/// Pass the delegate to your function, which will decide
/// if to enable the 'Make New Folder' button or not.
/// </summary>
public ShowNewButtonHandler SetNewFolderButtonCondition
{
get
{
return m_ShowNewButtonHandler;;
}
set
{
m_ShowNewButtonHandler = value;
}
}
#endregion
}
}
Let me know if this does not help.
Aland Li
Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread. - Marked As Answer byAland LiMSFT, ModeratorWednesday, October 07, 2009 2:09 AM
-
| | Aland Li Monday, October 05, 2009 9:41 AM | Hi Aland Li..,
Thank you for spending precious time on replying me.
i need folder browser dialogue must be opened in my form.
is it possible..?if so,how can i customize the folder browser.?
please reply me..
Thanks,
Regards,
Nagasrihari.A
hari | | Hari.A Tuesday, October 06, 2009 11:06 AM | Hi Hari.A,
Please read the document, download and test the sample in the link I provided. Then follow the second reply of me to modify the code, you would find that all the issues you met would be solved. All your questions would also be answered if you do all the things above.
Regards,
Aland Li
Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread. | | Aland Li Wednesday, October 07, 2009 1:52 AM | Hi Aland Li..,
Thanks for your reply, i will do as per your instructions
thanks,
Regards,
Hari.A
hari | | Hari.A Wednesday, October 07, 2009 5:24 AM | The folderbrowserdialog cannot be put in your own form, for that you can use a control such as the FolderView | | LogicNP Thursday, October 08, 2009 4:16 AM |
|
index > Windows Forms Designer > How to hide "OK" and "CANCEL" Buttons folderBrowserDialog ..