Error with DataGridView.Rows.Add()

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hi,
i'm using visual c# 2008
i've set up a datagridview containing 2 columns with the designer.
when i run the program DataGridView.Rows.Add() pops up an error saying (translated)
"before adding a row you have to add colums to the row"
I've done some projects before populating datagridview manually and never came up with this
error.
Any ideas ?

Posted 23-Dec-13 8:19am

fheyn

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2 solutions

Solution 1

The exception means exactly what it says. You are attempting to add rows to a table that has no columns. Have a look here to see an example what you will need.

Posted 23-Dec-13 10:02am

Richard C Bishop

Updated 23-Dec-13 10:04am

v2

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fheyn 24-Dec-13 13:29pm

thanks for the response
i think the problem is mixed-up dotnet versions.
i have this code :
enum DI { INDEX=14}
double xmplfunc(DI index) { return(data[(int)index]); }
this was ok. right now the (int)-cast pops up an error message.

i had to install c#2008 on a new harddisk with already installed wxp plus dotnet3.5.
also installed with c# is dotnet2.0 (not very clever by the ms-folks)
that's the only explanation i have for the programs running before right now yielding errors.

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agent_kruger · Accepted Answer · 2013-12-24T23:32:00

Solution 2

check by debugging before you add the row that if the columns exists in datagridview.

Posted 24-Dec-13 23:32pm

agent_kruger

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fheyn 25-Dec-13 15:08pm

thanks for the hint

instead of datagridview.rows.clear() i had datagridview.columns.clear()
everything's working fine