Column resize on automatic updated radgridview issue

[Ziblib]

Hi,

 I have a form with a radGridView (with 4 columns), the radGridView datasource is a datatable which i update every one second.

When i try to resize any column the width is being reset instead of stretching according to the mouse position.

 

Here is the test application code :

 

Random rndRandom = new Random();

private void RadForm1_Load(object sender, EventArgs e)
{
    radGridView1.AutoGenerateColumns = false;

    timer1.Start();
}



private void timer1_Tick(object sender, EventArgs e)
{
    DataTable dt = new DataTable();
    dt.Columns.Add("AAA1", typeof(int));
    dt.Columns.Add("AAA2", typeof(int));
    dt.Columns.Add("AAA3", typeof(int));
    dt.Columns.Add("AAA4", typeof(int));

    for (int i = 0; i < 20; i++)
    {
        DataRow dr = dt.NewRow();

        dr["AAA1"] = rndRandom.Next();
        dr["AAA2"] = rndRandom.Next();
        dr["AAA3"] = rndRandom.Next();
        dr["AAA4"] = rndRandom.Next();

        dt.Rows.Add(dr);
    }

    radGridView1.DataSource = dt;
}

 

Is there anyway to sort this issue?

[Dess | Tech Support Engineer, Principal]

Hello ,

Thank you for writing.
 
This scenario can't be considered as valid because when you change the RadGridView.DataSource, the whole grid is refreshed in order to display the new data. If a resize operation is ongoing when the timer ticks, you can encounter an invalid state for the grid. That is why I would recommend you skip the DataSource reset when resize cursor is applied to the grid:

private void timer1_Tick(object sender, EventArgs e)
{
    if (this.radGridView1.Cursor != Cursors.SizeWE)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("AAA1", typeof(int));
        dt.Columns.Add("AAA2", typeof(int));
        dt.Columns.Add("AAA3", typeof(int));
        dt.Columns.Add("AAA4", typeof(int));

        for (int i = 0; i < 20; i++)
        {
            DataRow dr = dt.NewRow();

            dr["AAA1"] = rndRandom.Next();
            dr["AAA2"] = rndRandom.Next();
            dr["AAA3"] = rndRandom.Next();
            dr["AAA4"] = rndRandom.Next();

            dt.Rows.Add(dr);
        }

        radGridView1.DataSource = dt;
    }
}

I hope this information helps. Should you have further questions I would be glad to help.

 

Regards,
Dess
Telerik