How to get the RadCheckBox element in a RadGridView and toggle the checkbox

[Suhaib]

I have a RadGridView that has its first column(named "Visible") as a CheckBox cell in every row.

I have another CheckBox that toggles all the CheckBoxes in the GridView. In this CheckBox's ToggleStateChanged handler, I am trying to get the checkbox element in the GridView row and toggle its state.

This is what I am trying at the moment:

foreach(var myGridRow in curveGridView.Rows)
{
    ((GridViewCheckBoxColumn)myGridRow.Cells["Visible"].ColumnInfo).Checked = Telerik.WinControls.Enumerations.ToggleState.On;
}

However, I am unable to get the RadCheckBox element in the GridView Row and I cannot toggle the checkbox in the row.

Any help would be greatly appreciated.

[Suhaib]

one thing to note for this issue is that the checkbox to toggle all other checkboxes in the gridview is outside the gridview.

i.e. I have a groupbox. The groupbox contains the CheckBox and the GridView. This groupbox contains the CheckBox to toggle all other GridView checkboxes. Hope this helps understand better.

[Nadya | Tech Support Engineer]

Hello, Suhaib,

According to the provided information, it seems that you have a GridViewCheckBoxColumn added to the grid which is named "Visible". If I understand correctly, you would like to mark all the checkboxes as checked outside the grid. To do so, you should set the Value property of the respective GridViewCellInfo.

Cells can be accessed by column index or name. More information on this topic is available here: Accessing Cells - WinForms GridView Control - Telerik UI for WinForms

Here is a sample code snippet of how to set the toggle state on for the checkboxes in grid, for example when clicking a button:

private void radButton2_Click(object sender, EventArgs e)
{
    //set Value
    foreach (GridViewDataRowInfo row in this.radGridView1.Rows)
    {
        row.Cells["Visible"].Value = true;
    }
}

I hope this information is useful. If you have any other questions do not hesitate to contact me.

Regards,
Nadya | Tech Support Engineer
Progress Telerik