Cannot add rows to my data-bound dataGridview dynamically

Question

   RDP0 yeni = new RDP0();
        yeni.IPADDRESS = "1.1.1.1";
        yeni.PASSWORD = " 10akh0";
        yeni.NO = 8;
        yeni.CUSTID = 1000;
        testList.Add(yeni);
        dataGridView1.DataSource = testList;

I'm getting data-bound error therefore I cannot add rows. Any help would be great. This is how I bound data to my dataGV:

        tm = new testModel();
        var query = from fe in tm.ERDP0 select fe;
        testList = query.ToList();
        dataGridView1.DataSource = testList;

roemel · Accepted Answer · 2015-07-07 12:35:44Z

3

If the DataGridView is data bound you cannot add new rows/columns to the DataGridView directly. But you could add a row to a DataTable which will update your DataGridView automatically.

DataTable dt = dataGridView1.DataSource as DataTable;
dt.Rows.Add("new row");

Or you could add the new row to your source list and then reset the DataSource:

testList.Add(youritem);
dataGridView1.DataSource = null;
dataGridView1.DataSource = testList;

edited Jul 7, 2015 at 12:35

answered Jul 7, 2015 at 7:41

roemel

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3 Comments

BarisY Over a year ago

I'm gettin 1 more error now . "object reference not set to an instance of an object" ` DataTable dt = dataGridView2.DataSource as DataTable; using (DataGridViewRow row = new DataGridViewRow()) { row.CreateCells(dataGridView2); dt.Rows.Add(row); } dataAdapter.Fill(dt); ` @Roman

BarisY Over a year ago

private List<RDP0> testList = new List<RDP0>(); rdp0 is the name of the table from my Database

BarisY Over a year ago

with your help I find the solution to my problem thanks

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