I have a datagrid and when selecting a cell which is a dropdown list response time is about 5 minutes for the values in the list to display.

Looking through the code the line which is causing the delay is:

grid.BeginEdit(false);

Is there any other way of making the cell read only? For information the dropdown list contains around 3000 lookup values.

Any help would be appreciated.

Regards
GS

I have investigated further, and realised there is some iteration after which is causing the delay.

A snippet of the iteration is:

foreach (MsProject.LookupTableEntry entry in outlineCode.LookupTable)
{
    if (entry.Name.Equals(value))
    {
           application.ActiveProject.ProjectSummaryTask.SetFi eld(
                application.FieldNameToFieldConstant(fieldName, MsProject.PjFieldType.pjTask),
                      entry.FullName
                      );
           found = true;
           break;
        }
}

Is there anything I could do to speed up the process? Any help would be appreciated.
Thanks