Data Grid columns duplicating

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Hi I am trying to populate a data grid pragmatically from a data set table using the code below ;-

C#

private void WOTest_Load(object sender, EventArgs e)
        {
            FormDataSet = woutil.GetDataset;
            dgComments.DataSource = FormDataSet.Tables["PREWODOC_COMMENTS"];
            foreach (DataColumn col in FormDataSet.Tables["PREWODOC_COMMENTS"].Columns)
            {
                dgComments.Columns.Add(col.ColumnName, col.ColumnName);
            }
        }

This code does create the columns in the data grid however instead of having the 4 columns I was expecting I get 8 columns because the columns are duplicated. How can I stop the columns duplicating I have stepped the code and the call to add the columns is only done 4 times as I would expect so I do not understand why there are 8 columns as there are only 4 added?

Posted 30-Oct-14 4:47am

Member 11123297

Updated 30-Oct-14 23:34pm

ClimerChinna

v2

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Member 11123297 30-Oct-14 11:36am

No that isn't the problem the grid is new only placed on the form with no data bindings or columns added. To check I have just adde a new grid and tried the code against that and the columns are still duplicated.

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ZurdoDev · Answer 1 · 2014-10-30T04:55:00

Solution 1

You have the columns already bound in the design area and so in code you are adding them again. Just comment out the foreach loop that adds them.

Posted 30-Oct-14 4:55am

ZurdoDev

Member 11123297 · Answer 2 · 2014-10-30T22:36:00

I was unaware that the auto generate columns attribute was set to true by default setting this to false before adding the columns has solved the issue.

C#

private void WOTest_Load(object sender, EventArgs e)
{
    FormDataSet = woutil.GetDataset;
    dgComm.DataSource = FormDataSet.Tables["PREWODOC_COMMENTS"];
    dgComm.AutoGenerateColumns = false;
    foreach (DataColumn col in FormDataSet.Tables["PREWODOC_COMMENTS"].Columns)
    {
        dgComm.Columns.Add(col.ColumnName, col.ColumnName);
    }
}