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Checking if column exists in GridDataItem

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Eliyahu Goldin
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Eliyahu Goldin asked on 05 Sep 2008, 01:13 PM

This code will throw an exception:

                        GridDataItem dItem = e.Item as GridDataItem;  
                        // rename edit button  
                        TableCell cell = dItem["cmdEdit"];  
                        if (cell != null)  
                        {  
                            Control control = cell.Controls[0];  
                            if (control != null)  
                            {  
                                LinkButton cmdEdit = control as LinkButton;  
                                cmdEdit.Text = "View";  
                            }  
                        }  
 

Instead of handling exceptions, I would rather prefer to check if the column exists prior to accessing it. I couldn't find any simple way of checking column existense by unique name.

Why don't you introduce a method GridDataItem.ContainsColumn(uniqueName) ?

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Daniel
Telerik team
answered on 05 Sep 2008, 01:24 PM
Hello Eliyahu,

You can use RadGrid1.MasterTableView.GetColumnSafe(); in order to check if the given column exist.

Also you to modify your code a bit:
if (cell.HasControls()) 
    Control control = cell.Controls[0]; 

This will prevent exceptions when there are no controls in the current cell.

Regards,
Daniel
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Eliyahu Goldin
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answered on 07 Sep 2008, 07:02 AM
Thanks, Daniel.
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Eliyahu Goldin
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