Add a new row to a DataTable

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csvData is a DataTable bound to a DataGridView. Compiles & runs no errors . . but after refresh, no new row appears in grid . . . ?? Is there something missing?

private void addNewRowButton_Click(object sender, EventArgs e)
{
csvData.NewRow();
DataGridView1.Refresh();

}

The sender of the addNewRowButton is the Form1 . . . a WINDOWS form.

Posted 13-Jan-14 5:36am

JOHNNYDEMICHAEL

Updated 13-Jan-14 6:03am

v4

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Richard C Bishop 13-Jan-14 11:39am

Is this Windows or web forms?

2 solutions

Solution 2

You need to bind the DGV again like below.

C#

private void addNewRowButton_Click(object sender, EventArgs e)
{
    csvData.NewRow();
    // Provide Column values for the New Row.

    DataGridView1.DataSource = csvData;
    DataGridView1.DataBind();
}

Posted 13-Jan-14 6:09am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Updated 13-Jan-14 6:12am

v2

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OriginalGriff · Accepted Answer · 2014-01-13T06:05:00

Solution 1

Perhaps it would help is you added the new row to the table?
DataTable.NewRow[^] just creates a new blank row with the correct schema / columns...

Posted 13-Jan-14 6:05am

OriginalGriff

Comments

JOHNNYDEMICHAEL 13-Jan-14 12:13pm

Doesn't the above add a new row to the table? I want a blank row to appear in the DataGridView for the user to enter data. Shouldn't the blank row appear in the grid?

OriginalGriff 13-Jan-14 12:18pm

No - if you look at the link, it describes what it does: creates a new blank row, it doesn't try to add it to the DataTable.Rows collection - you have to do that manually afterwards (so that any target data source doesn't get updated with "empty" data accidentally).

JOHNNYDEMICHAEL 13-Jan-14 17:09pm

I understand . . . thanks!

OriginalGriff 13-Jan-14 17:40pm

You're welcome!