i want to disable some default Column Header Context Menu like "Sort Ascdnging" "Sort Descending" ... 

How to do  ?

Also i want to disable some default Cell Column Context Menu ?  TKS 

i use RADGRIDVIEW  to show datas

i want to let use to select  some rows as  "Deleted"

to delete these datas form DataBase

how can i  let these rows  shown as the following

the example is done by using C# default DataGridView

How can be done in RADGRIDIEW ?

Hello,

I would like to ask two questions about custom columns in GridView. I'm putting them into one thread since they're related.

1. What's the relationship between SetContentCore and OnCellFormatting? Is it ok to set formatting in SetContentCore? This is how it seems to me to be correct:

		protected override void SetContentCore(object value)
		{
			if (value is Quality q)
			{
				if (q == Quality.None)
					Text = "--";
				else
					Text = q.ToString();
			}
			else
				base.SetContentCore(value);
		}

		protected override void OnCellFormatting(CellFormattingEventArgs e)
		{
			ResetValue(VisualElement.BackColorProperty, ValueResetFlags.Local);
			ResetValue(VisualElement.ForeColorProperty, ValueResetFlags.Local);
			ResetValue(LightVisualElement.NumberOfColorsProperty, ValueResetFlags.Local);
			ResetValue(LightVisualElement.DrawFillProperty, ValueResetFlags.Local);

			if (Value is Quality q)
			{
				switch (q)
				{
					case Quality.OK:
						BackColor = Color.Lime;
						NumberOfColors = 1;
						DrawFill = true;
						break;
					case Quality.NOK:
						BackColor = Color.Red;
						NumberOfColors = 1;
						DrawFill = true;
						break;
					case Quality.Error:
						BackColor = Color.DodgerBlue;
						NumberOfColors = 1;
						DrawFill = true;
						break;
				}
			}

			base.OnCellFormatting(e);
		}

But this also works. I tried it mainly because of the second question, and Copilot actually suggested it as the first styling approach.

		protected override void SetContentCore(object value)
		{
			if (value is Quality q)
			{
				if (q == Quality.None)
					Text = "--";
				else
					Text = q.ToString();

				ResetValue(VisualElement.BackColorProperty, ValueResetFlags.Local);
				ResetValue(VisualElement.ForeColorProperty, ValueResetFlags.Local);
				ResetValue(LightVisualElement.NumberOfColorsProperty, ValueResetFlags.Local);
				ResetValue(LightVisualElement.DrawFillProperty, ValueResetFlags.Local);

				switch (q)
				{
					case Quality.OK:
						BackColor = Color.Lime;
						NumberOfColors = 1;
						DrawFill = true;
						break;
					case Quality.NOK:
						BackColor = Color.Red;
						NumberOfColors = 1;
						DrawFill = true;
						break;
					case Quality.Error:
						BackColor = Color.DodgerBlue;
						NumberOfColors = 1;
						DrawFill = true;
						break;
				}
			}
			else
				base.SetContentCore(value);
		}

2. Is there any way to override how Value is retrieved from the DataBoundItem? In one of my column types, I can't use FieldName directly. In classic DataGridView, I could override GetValue / SetValue like this:

		protected override object GetValue(int rowIndex)
		{
			DgvRealResultColumn col = OwningColumn as DgvRealResultColumn;
			object obj = DataGridView.Rows[rowIndex].DataBoundItem;
			if ((col == null) || (obj == null))
				return base.GetValue(rowIndex);

			object resultValue = GetResultValue(rowIndex, col, obj);
			Quality q = (Quality)Convert.ToInt32(resultValue);
			if (!QualityHelper.HasValue(q))
				return null;

			if (obj is RealResult rr)
				return rr.Value;

			string propName = string.Format("R{0:D3}Value", col.ItemIndex);
			PropertyInfo pi = obj.GetType().GetProperty(propName);
			return pi.GetValue(obj, null);
		}

I don't see anything like that in Telerik GridView. So far, I came up with this workaround:

		protected override void SetContentCore(object value)
		{
			TestResult r = null;
			var obj = RowInfo.DataBoundItem;
			if (obj is TestResult)
				r = (TestResult)obj;
			else if (obj is TestItem item)
			{
				var col = ColumnInfo as RgvTestResultColumn;
				if ((col != null) && (item.Results != null) && (col.ResultIndex < item.Results.Length))
					r = item.Results[col.ResultIndex];
			}

			ResetValue(VisualElement.BackColorProperty, ValueResetFlags.Local);
			ResetValue(VisualElement.ForeColorProperty, ValueResetFlags.Local);
			ResetValue(LightVisualElement.NumberOfColorsProperty, ValueResetFlags.Local);
			ResetValue(LightVisualElement.DrawFillProperty, ValueResetFlags.Local);

			if (r == null)
			{
				base.SetContentCore(value);
				return;
			}

			switch (r.Result)
			{
				case Quality.OK:
					Text = r.Value.ToString("F1");
					BackColor = Color.Lime;
					NumberOfColors = 1;
					DrawFill = true;
					break;
				case Quality.NOK:
					Text = r.Value.ToString("F1");
					BackColor = Color.Red;
					NumberOfColors = 1;
					DrawFill = true;
					break;
				case Quality.Error:
					Text = "X";
					BackColor = Color.DodgerBlue;
					NumberOfColors = 1;
					DrawFill = true;
					break;
				default:
					Text = "--";
					break;
			}
		}

But in this case, it doesn't set the internal Value, so when I write rgv.Rows[0].Cells["colR0"].Value in code, I always get null. Is there any way to solve this? I am attaching my test code for testing.

i want to custimize RadMessageBox  

example  :  set the TitleBar.Font  BackColor

set  radLabel1  font and backcolor 

set button 's font and button's  szie ....

RadMenuItem's TEXT shown too small ? how can i fix it ? 

Since ShapedForm inherits from Form, it may be difficult to apply it to existing RadForm forms.

Hello,

I’m working with some older forms that use System.Windows.Forms.DataGridView. The form is quite complex, so converting it to Telerik isn’t straightforward.

I’d like to copy a row from RadPageView. Could you please provide a sample code snippet showing how to achieve this?

Thank you!

Radek

Hi All,

I searched on internet for the solution but didn't find any solution. I am using RadTreeView control, when I move mouse over treeview, nodes get highlighted. I used following ways but no luck.

private void radTreeList_NodeMouseMove(object sender, RadTreeViewMouseEventArgs e)
{
    e.Node.BackColor = Color.Transparent; // Remove hover background
}

    private void radTreeList_NodeFormatting(object sender, TreeNodeFormattingEventArgs e)
    {
        e.NodeElement.BackColor = Color.Transparent; // Remove hover background
        e.NodeElement.DrawFill = false; // Disable fill

        if (e.Node.Selected)
        {
            e.Node.BackColor = Color.Blue; // Default background
            e.Node.ForeColor = Color.White;      // Default text color
        }
        else
        {
            e.NodeElement.ContentElement.ResetValue(LightVisualElement.BackColorProperty, ValueResetFlags.Local);
            e.NodeElement.ContentElement.ResetValue(LightVisualElement.ForeColorProperty, ValueResetFlags.Local);
        }           
    }

Kindly provide me solution, stuck on this for a long time.

Thanks

Hi All,

I have implemented the Telerik window tree view control in my project, in output when I move mouse over nodes, get highlighted. I need to remove that one.

I tried the following ways but no luck.

 private void radTreeList_NodeMouseMove(object sender, RadTreeViewMouseEventArgs e)
 {
     e.Node.BackColor = Color.Transparent; // Remove hover background
 }

  private void radTreeList_NodeFormatting(object sender, TreeNodeFormattingEventArgs e)
  {
      e.NodeElement.BackColor = Color.Transparent; // Remove hover background
      e.NodeElement.DrawFill = false; // Disable fill

      if (e.Node.Selected)
      {
          e.Node.BackColor = Color.Blue; // Default background
          e.Node.ForeColor = Color.White;      // Default text color
      }
      else
      {
          e.NodeElement.ContentElement.ResetValue(LightVisualElement.BackColorProperty, ValueResetFlags.Local);
          e.NodeElement.ContentElement.ResetValue(LightVisualElement.ForeColorProperty, ValueResetFlags.Local);
      }           
  }

Please provide me a solution to get rid off this problem.

Thanks,

Ravinder Singh

i add some "CommandBarButton"s into RadCommandBar

i need image like "Add/Edit/Cancel/Delete"

Do Telerik provide images for use  ?

Do i need png or  SVG  File ?

CHATGPT tell me there is "Telerik.WinControls.UI.RadImageList"

but i can not find it