I am wanting to implement drag-and-drop on my DataGridView. I have found several examples of how to do this: most are similar to this: http://www.timvw.be/drag-and-drop-on-a-datagridview/

The problem I have though is that my grid is bound to a data source.

Does anyone have a C# example of how to drag and drop within the same grid that is bound to a data source?

tia

Hi VBCoder13,

I try it by my side, it seem that the code you provide also can implement drag and drop in the DataGridView which is bound to a data source. Please try the following code.

privatevoidForm1_Load(objectsender,EventArgse)

{

DataTabledt1=newDataTable("dt1");

dt1.Columns.Add("dt1_ID");

dt1.Columns.Add("dt1_name");

for(inti=0;i<5;i++)

{

dt1.Rows.Add("1","dt1_1");

dt1.Rows.Add("2","dt1_2");

}

this.dataGridView1.DataSource=dt1;

this.dataGridView1.AllowDrop=true;

dataGridView1.MouseDown+=newMouseEventHandler(dataGridView1_MouseDown);

dataGridView1.DragDrop+=newDragEventHandler(dataGridView1_DragDrop);

dataGridView1.DragEnter+=newDragEventHandler(dataGridView1_DragEnter);

}

privatevoiddataGridView1_MouseDown(objectsender,MouseEventArgse)

{

DataGridView.HitTestInfoinfo=this.dataGridView1.HitTest(e.X,e.Y);

if(info.RowIndex!=-1&&info.ColumnIndex!=-1)

{

Objectvalue=this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value;

if(value!=null)

{

this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value=null;

this.DoDragDrop(value,DragDropEffects.Move);

}

}

}

privatevoiddataGridView1_DragDrop(objectsender,DragEventArgse)

{

Pointp=this.dataGridView1.PointToClient(newPoint(e.X,e.Y));

DataGridView.HitTestInfoinfo=this.dataGridView1.HitTest(p.X,p.Y);

if(info.RowIndex!=-1&&info.ColumnIndex!=-1)

{

Objectvalue=(Object)e.Data.GetData(typeof(string));

this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value=value;

}

}

privatevoiddataGridView1_DragEnter(objectsender,DragEventArgse)

{

e.Effect=DragDropEffects.Move;

}

Hoping that could help you!

If you have any other question, please feel free to let me know.

Best regards,

Ling

---

Please remember to click “Mark as Answer�on the post that helps you, and to click “Unmark as Answer�if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi VBCoder13,

I try it by my side, it seem that the code you provide also can implement drag and drop in the DataGridView which is bound to a data source. Please try the following code.

privatevoidForm1_Load(objectsender,EventArgse)

{

DataTabledt1=newDataTable("dt1");

dt1.Columns.Add("dt1_ID");

dt1.Columns.Add("dt1_name");

for(inti=0;i<5;i++)

{

dt1.Rows.Add("1","dt1_1");

dt1.Rows.Add("2","dt1_2");

}

this.dataGridView1.DataSource=dt1;

this.dataGridView1.AllowDrop=true;

dataGridView1.MouseDown+=newMouseEventHandler(dataGridView1_MouseDown);

dataGridView1.DragDrop+=newDragEventHandler(dataGridView1_DragDrop);

dataGridView1.DragEnter+=newDragEventHandler(dataGridView1_DragEnter);

}

privatevoiddataGridView1_MouseDown(objectsender,MouseEventArgse)

{

DataGridView.HitTestInfoinfo=this.dataGridView1.HitTest(e.X,e.Y);

if(info.RowIndex!=-1&&info.ColumnIndex!=-1)

{

Objectvalue=this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value;

if(value!=null)

{

this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value=null;

this.DoDragDrop(value,DragDropEffects.Move);

}

}

}

privatevoiddataGridView1_DragDrop(objectsender,DragEventArgse)

{

Pointp=this.dataGridView1.PointToClient(newPoint(e.X,e.Y));

DataGridView.HitTestInfoinfo=this.dataGridView1.HitTest(p.X,p.Y);

if(info.RowIndex!=-1&&info.ColumnIndex!=-1)

{

Objectvalue=(Object)e.Data.GetData(typeof(string));

this.dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value=value;

}

}

privatevoiddataGridView1_DragEnter(objectsender,DragEventArgse)

{

e.Effect=DragDropEffects.Move;

}

Hoping that could help you!

If you have any other question, please feel free to let me know.

Best regards,

Ling

---

Please remember to click “Mark as Answer�on the post that helps you, and to click “Unmark as Answer�if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.