CheckBoxes for CustomGridView

Corsair · April 16th, 2009, 01:54 PM

Yesterday I set out to do two things with the CustomGridView.

First, I wanted to show the grid even when there was no data (similar to what the GridView does), but I also wanted the headers to show (something the GridView does not do).

That was easily accomplished by overriding CreateChildControls - check out http://dotnetslackers.com/GridView/r...ta_Exists.aspx if you're interested.

The scond one, adding a CheckBox, proved more challenging. Not creating the field, but setting it to the right value on the RowDataBound event.

I added the following function to CustomGridView.cs:

Code:

public void AddBoundCheckBox(string dataField, string headerText, string sortExpression)
{
   CheckBoxField cbf = newCheckBoxField();
 
   if (dataField != "")
        cbf.DataField = dataField;
   if (headerText != "")
        cbf.HeaderText = headerText;
   if (sortExpression != "")
        cbf.SortExpression = sortExpression;
 
   Columns.Add(cbf);
}

Getting the value set was a lot more challenging (for me). Here's what I ultimately came up with (variable names changed from my code) in the RowDataBound event handler:

Code:

((CheckBox)e.Row.Cells[COL_INDEX_CONST].Controls[0]).Checked = ((baseEO)e.Row.DataItem).SomeBooleanProperty;

This works....but I'm wondering if there's an easier/better way to do this?

Tim

varallov · April 20th, 2009, 11:27 PM

Hi Tim,
You could also just create the checkbox in the RowDataBound event and add the control to the cell similar to how the Edit and Delete links get added. Either way will work and really it comes down to what you are more comfortable with.
Vince