Hello, Sagar,
In order to disable the CellBackColor and RowBackColor options in the conditional formatting dialog, it is necessary to handle the ConditionalFormattingFormShown event and access the property grid that is used in the Format section. Then, disable these particular items in the RadPropertygrid.ItemFormatting event.
public RadForm1()
{
InitializeComponent();
this.radGridView1.ConditionalFormattingFormShown += radGridView1_ConditionalFormattingFormShown;
}
private void radGridView1_ConditionalFormattingFormShown(object sender, EventArgs e)
{
ConditionalFormattingForm form = sender as ConditionalFormattingForm;
RadPropertyGrid propertyGrid = form.Controls["radPropertyGridProperties"] as RadPropertyGrid;
if (propertyGrid != null)
{
propertyGrid.ItemFormatting -= propertyGrid_ItemFormatting;
propertyGrid.ItemFormatting += propertyGrid_ItemFormatting;
propertyGrid.Editing -= propertyGrid_Editing;
propertyGrid.Editing += propertyGrid_Editing;
}
}
private void propertyGrid_Editing(object sender, PropertyGridItemEditingEventArgs e)
{
if (e.Item.Label == "CellBackColor" || e.Item.Label == "RowBackColor")
{
e.Cancel = true;
}
}
private void propertyGrid_ItemFormatting(object sender, PropertyGridItemFormattingEventArgs e)
{
if (e.Item.Label == "CellBackColor" || e.Item.Label == "RowBackColor")
{
e.VisualElement.Enabled = false;
}
else
{
e.VisualElement.Enabled = true;
}
}

I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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