C#

DataGridTextBoxColumn _datagridtextBox = (DataGridTextBoxColumn)YourDataGrid.TableStyles[0].GridColumnStyles[X];<br />
			_datagridtextBox.TextBox.KeyPress += new System.Windows.Forms.KeyPressEventHandler(Execute_This);

private void Execute_This(object sender, System.Windows.Forms.KeyPressEventArgs e)<br />
{<br />
<br />
   TextBox tBox = (textBox) sender;<br />
   //tBox.Text is the text that has been already written by the user..<br />
   //e.KeyChar is the chararacter corresponding to the character that the user has just written..You just make tests..<br />
<br />
}

<br />
Color currColor = image.pixel[x,y].GetColor();<br />
<br />
//Save on looking up pixel location repeatedly<br />
if( ObjHash.ContainsKey(currColor) )<br />
{<br />
int val= (int)ObjHash[currColor];<br />
ObjHash[currColor]=++val;<br />
test=false;<br />
}<br />
else //Remove an If test<br />
{<br />
ObjHash.Add(currColor),1);<br />
list.Add(currColor);<br />
count++;<br />
} // ending if (test)<br />
<br />

int colors[]=new int[16777216]; //24bit colors<br />
for(int i=0;i<16777216;i++) colors[i]=0;  <br />
for(int y=0;y<img.Height;y++)<br />
{ <br />
  for(int x=0;x<img.Width;x++)<br />
  {<br />
  test = true;<br />
  colors[image.pixel[x,y]]++;<br />
}