Make ReadOnly cells scrollable in C1FlexGrid


How to make ReadOnly cells scrollable in C1FlexGrid.

Steps to Complete:

You can make normal cells scrollable by taking it as a textbox at the time of Editing and make that textbox scrollable but what if the cells are non-editable. Below is given the trick to achieve the same when cells are non-editable:

1. Create a TextBox and add it to the child control of the grid.

private TextBox textBoxForDisplay;
  this.textBoxForDisplay = new TextBox();
  this.textBoxForDisplay.ScrollBars = ScrollBars.Both;
   this.textBoxForDisplay.Multiline = true;
   //Make it readonly:
   this.textBoxForDisplay.ReadOnly = true;
   this.textBoxForDisplay.Visible = false;

2. Handle the AfterSelChange event of FlexGrid to show the TextBox on the selected ReadOnly cell.

private void C1FlexGrid1_AfterSelChange(object sender, C1.Win.C1FlexGrid.RangeEventArgs e)
            if (e.NewRange.LeftCol == 2)
             this.textBoxForDisplay.Visible = true;
           //Position of cell:
             Rectangle rectCell = this.c1FlexGrid1.GetCellRect(e.NewRange.TopRow,      
           this.textBoxForDisplay.Location = rectCell.Location;
           this.textBoxForDisplay.Size = rectCell.Size;
          //Write Text to textbox:
          this.textBoxForDisplay.Text = (string)this.c1FlexGrid1[e.NewRange.TopRow,  
        this.textBoxForDisplay.Visible = false;

3. In the GotFocus event of TextBox, hide the blinking caret in the ReadOnly textbox cell as follows.

using System.Runtime.InteropServices;
private static extern bool HideCaret(IntPtr hWnd);
private void TextBoxForDisplay_GotFocus(object sender, EventArgs e)
   if (textBoxForDisplay.ReadOnly == true)

Prabhat Sharma