I have hidden columns in a datagridview that is on a tab control (it's on the 3rd tab, so it's not initially displayed when I load my form). When I use the tabcontrol to display the datagridview prior to loading it with data it displays fine. If I navigate to it and then load it with data, that works fine as well. However, when I load it with data (while its not displayed and tab 31 is displayed instead) and then navigate to tab 3 to display the datagridview, the hidden column displays itself even though I've set the "visible" property in the designer to be "false".

Any suggestions?

Hi,

I test on my side. Unfortunately, I am not able to reproduce this issue. I think I may miss something.

Could you please show us your code?

I use the following code. Run and select the third page. The first column is hided.

DataTable dt01 = new DataTable();

private void Form3_Load(object sender, EventArgs e)

{

// first dispaly page is the first page

tabControl1.SelectedIndex = 0;

DataGridView dataGridView01 = new DataGridView();

// add datagridview to the page 3

tabControl1.TabPages[2].Controls.Add(dataGridView01);

dt01.Columns.Add("col01");

dt01.Columns.Add("col02");

dt01.Columns.Add("col03");

dataGridView01.DataSource = dt01;

dataGridView01.Columns[0].Visible = false;

}

Best regards,

Ling Wang

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This may have been some sort of odd bug with the designer because the problem went away.