C＃DATAGRIDVIEW选择行并显示选择的行

Question

My datagrid view is populated with multiple rows of data, I want to be able to select multiple rows in my datagridview and then update the datagridview to only display the selected rows but i am getting errors

  public void btnUpdate_Click(object sender, EventArgs e)
    {


       List<DataGridViewRow> rowCollection = new List<DataGridViewRow>();
       foreach (DataGridViewRow row in dataGridView1.SelectedRows)
       {
           rowCollection.Add(dataGridView1.Rows[row.Index]);
       }

       //dataGridView1.Rows.Clear();




  data.Tables[0].Clear();


      foreach (DataGridViewRow row in rowCollection)
        {
           DataRow r = data.Tables[table].NewRow();
            dataGridView1.Rows.Add(row);
          //write the data in the DataRow and then add the datarow in your datatable
          data.Tables[table].Rows.Add(r);


      }
        CreateGraph(zedGraphControl1);





    }

When i select the rows and click the update button i am getting the error "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."

• row {DataGridViewRow { Index=-1 }} System.Windows.Forms.DataGridViewRow

I have tried looking at the exception help for this but cannot make sense of it Thanks for your help

Answer 1

If I remember correctly the datagridview must not be data bound in order to manipulate the rows.

I believe that I solved this problem a couple months back but I can't get access to my projects right now.

I think you can do it by finding and removing the rows from the data source and then refresh the datagridview

(personal advice: take a short break 10-15 mins and go back at it with a clearer mind)