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Cannot add cells to rows in DataGridView

 
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Cannot add cells to rows in DataGridView
cygnusX
28 Dec, 2007 - 08:31 AM
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CODE

DataGridViewRow row = new DataGridViewRow();
DataGridViewCell c1 = row.Cells["values"];
DataGridViewCell c2 = row.Cells["user"];


What's wrong with that code?I'm getting exception saying that i do not have column named 'values',but i have such column.If i set breakpoint before DataGridViewCell c1 = row.Cells["values"]; i can see that there are two columns in the datagridview named 'values' and 'user'.Even if i use DataGridViewCell c1 = row.Cells[0]; i'm getting another exception saying this "Index was out of range. Must be non-negative and less than the size of the collection."What's wrong?
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phatSolutions
RE: Cannot Add Cells To Rows In DataGridView
28 Dec, 2007 - 10:22 AM
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QUOTE(cygnusX @ 28 Dec, 2007 - 09:31 AM) *

CODE

DataGridViewRow row = new DataGridViewRow();
DataGridViewCell c1 = row.Cells["values"];
DataGridViewCell c2 = row.Cells["user"];


What's wrong with that code?I'm getting exception saying that i do not have column named 'values',but i have such column.If i set breakpoint before DataGridViewCell c1 = row.Cells["values"]; i can see that there are two columns in the datagridview named 'values' and 'user'.Even if i use DataGridViewCell c1 = row.Cells[0]; i'm getting another exception saying this "Index was out of range. Must be non-negative and less than the size of the collection."What's wrong?



Hmm, im going to have to do some testing but you could try casting the row.Cells to a DataGridViewCell like so:

CODE
DataGridViewCell c1 = (DataGridViewCell)row.Cells["values"];


havent tested it yet, but I will and see what I come up with.
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baavgai
RE: Cannot Add Cells To Rows In DataGridView
28 Dec, 2007 - 11:11 AM
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Well, for this:
CODE

DataGridViewRow row = new DataGridViewRow();
DataGridViewCell c1 = row.Cells["values"];


The row is new and is completely empty. Presumably you're getting the row from an active dataGrid?

If so, write a little code to dump out what's really there, e.g.
CODE

System.Diagnostics.Debug.WriteLine("ColumnCount = " + row.DataGridView.ColumnCount);
foreach(DataGridViewColumn col in row.DataGridView.Columns) {
   System.Diagnostics.Debug.WriteLine(col.Index + " : " + col.Name);
}


Or just put a debugger break at the row call and walk around.

Hope this helps.
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