DataGridView Optimization

[Zack00000]

Hi,

Is there a way to optimize the DataGridView in terms of drawing speed? The application that I'm building will need to use multiple datagridview controls which will get updated around every 100ms. A receiver will parse the data then pass it to the datagridview, but there is no way to know how many rows will be returned.

Right now I'm testing using 2 methods:
1. Generate the rows programmaticall y

private List<MyObject> dg1Data = new List<MyObject>();
// ...
private void UpdateDGV1() {
  if (this.InvokeRequired) {
    this.BeginInvoke((Action)delegate { UpdateDGV1(); });
    return;
  }

  int iRowHeight = 15;
  if (dg1Data.Count != xDataGrid1.Rows.Count) xDataGrid1.Rows.Clear();
  for (int i = 0; i < dg1Data.Count; i++) {
    if (i >= xDataGrid1.Rows.Count) {
      xDataGrid1.Rows.Add();
      xDataGrid1.Rows[i].Height = iRowHeight;
    }
    xDataGrid1.Rows[i].Cells[0].Value = dg1Data[i].Value1;
    xDataGrid1.Rows[i].Cells[0].Style.BackColor = Color.Black;
    xDataGrid1.Rows[i].Cells[0].Style.ForeColor = Color.Red;
    xDataGrid1.Rows[i].Cells[1].Value = dg1Data[i].Value2;
    xDataGrid1.Rows[i].Cells[1].Style.BackColor = Color.Black;
    xDataGrid1.Rows[i].Cells[1].Style.ForeColor = Color.Green;
    xDataGrid1.Rows[i].Cells[2].Value = dg1Data[i].Value3;
    xDataGrid1.Rows[i].Cells[2].Style.BackColor = Color.Black;
    xDataGrid1.Rows[i].Cells[2].Style.ForeColor = Color.Blue;
  }
}

2. Using BindingSource

private List<MyObject> dg2Data = new List<MyObject>();
private BindingSource dgv2Binder = new BindingSource();
// ...
public Form1() {
  InitializeComponent();

  dgv2Binder.DataSource = dg2Data;
  xDataGrid2.AutoGenerateColumns = false;
  xDataGrid2.DataSource = dgv2Binder;
  xDataGrid2.Columns[0].DataPropertyName = "MyValue1";
  xDataGrid2.Columns[1].DataPropertyName = "MyValue2";
  xDataGrid2.Columns[2].DataPropertyName = "MyValue3";
}
// ...
private void UpdateDGV2() {
  if (this.InvokeRequired) {
    this.BeginInvoke((Action)delegate { UpdateDGV2(); });
    return;
  }

  dgv2Binder.ResetBindings(false);
}

When I measures the time taken for each method to perform datagridview's OnPaint function, the first method somehow significantly faster (on average 20% faster).

So my first question is; did I do something wrong on updating the datasource? (because i thought using datasource is suppossed to be better?)

Then my second question, is there a way to improve the speed, or is there a better/alternative form control to use?

Thanks in advance.

[Zack00000]

Hi,

Can someone help me please?

Thanks