A Problem with changing width of a gridview column

Question

I have a datatable binded with gridview and I want to change the column width. This it the code I use:

DataTable aTable = new DataTable("Words"); 
aTable.Columns.Add("word");

GridView1.DataSource = aTable;
DataRow a = aTable.NewRow();
a[0] = "test";
aTable.Rows.Add(a);
GridView1.DataBind();

GridView1.Columns[0].ItemStyle.Width = Unit.Pixel(200);

When the execution gets to the last line it produces an error saying that the column with index 0 is not found, howerver it is in the datatable and it is shown in the webpage.

Why doesn't the gridview see the column and is there a way around this?

Answer 1

I'd try placing this in the grid view's prerender event. You may be trying to do this in the wrong spot.

EDIT Try adding this before your statement:

if(GridView1.Columns.Count > 0)
//do stuff here

Answer 2

The column count will always be 0 unless you explicitly define <columns> in your gridview.

You are autogenerating. So use <columns> with <asp:BoundField DataField="word" />and it will work.