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Michael
330
Changing value of a cell
posted

Ok, this has been driving me crackers for a couple of hours now.  I'm a newbie to UltraGrid

I have a databound UltraGrid.  I added an extra column with an icon and text in it with the following:-

private void ugrBlah_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
{
  // Add new column for padlock (if it's not already there)
  if (!e.Layout.Bands[0].Columns.Contains("IsLocked"))
   e.Layout.Bands[0].Columns.Add("IsLocked", "Locked");
}

private void ugrBlah_InitializeRow(object sender, Infragistics.Win.UltraWinGrid.InitializeRowEventArgs e)
{
  e.Row.Cells["IsLocked"].Appearance.Image = Properties.Resources.padlock;
  e.Row.Cells["IsLocked"].Value = "Cheese";
}

Which works fine... I get a nice padlock icon with "Cheese" next to it.  Padlocked cheese.

But then, in response to a button click, I want the currently selected / lit / active row to change icon and text.  I've tried the following:-

ugrBlah.ActiveRow.Cells["IsLocked"].Value = "Cake";
ugrBlah.ActiveRow.Cells["IsLocked"].Appearance.Image = Properties.Resources.padlock_open;

It changes the icon, but not the text Value.

I have tried ...ActiveRow.Update(), and ugrBlah.Refresh(), both to no avail.

Any ideas anybody?

  • 37774
    posted

    Are you sure that the row that you're trying to change is the active row?  Are you clicking a button in a grid column, or is it a button outside of the grid?  The following code worked for me:

    private void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
    {
        UltraGridColumn col = e.Layout.Bands[0].Columns.Add("Button");
        col.Style = Infragistics.Win.UltraWinGrid.ColumnStyle.Button;

        col = e.Layout.Bands[0].Columns.Add("Food");           
    }

    private void ultraGrid1_ClickCellButton(object sender, CellEventArgs e)
    {
        e.Cell.Row.Cells["Food"].Value = "The cake is a lie";
        e.Cell.Row.Cells["Food"].Appearance.Image = Image.FromFile("images.jpg");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        this.ultraGrid1.ActiveRow.Cells["Food"].Value = "The cake is a lie";
        this.ultraGrid1.ActiveRow.Cells["Food"].Appearance.Image = Image.FromFile("images.jpg");
    }

    The code worked for both a cell button and grid button.  It's possible the row is selected, but not active.  If you're positive it's the correct row and it's active, I'm not sure what's going on; perhaps you should make sure you have the latest hotfix.

    -Matt