C#

DataColumn userSkill = new DataColumn("Skill");<br />
dtshowskills.Columns.Add(userSkill);<br />
DataColumn userLevel = new DataColumn("Level");<br />
dtshowskills.Columns.Add(userLevel);

	//Create the variables and arrays need only for Creating the table<br />
		string[] skills = new string[1];<br />
		skills[0] = "attack";<br />
		//skills[1] = "strength";<br />
		//skills[2] = "defence";<br />
<br />
		//The creation of the table that shows the user their stats from the database<br />
		//Dynamic Creation of the datatable<br />
<br />
		///Also sets up the new datatable<br />
		DataTable dtshowskills = new DataTable("USkills");<br />
<br />
		DataColumn dcuserSkill = new DataColumn("Skill");<br />
		dcuserSkill.DataType = System.Type.GetType("System.String");<br />
		dtshowskills.Columns.Add(dcuserSkill);<br />
		DataColumn dcuserLevel = new DataColumn("Level");<br />
		dcuserLevel.DataType = System.Type.GetType("System.Int32");<br />
		dtshowskills.Columns.Add(dcuserLevel);<br />
<br />
		foreach (string skill in skills)<br />
		{<br />
		DataRow drskill = dtshowskills.NewRow();<br />
		drskill["Skill"] = skill;<br />
		drskill["Level"] = 0;<br />
		dtshowskills.Rows.Add(drskill);<br />
		}<br />
<br />
		dgSkills.DataSource = dtshowskills;<br />
		dgSkills.DataBind();

public class MaskedTextBox : TextBox
{
	private string mask;
	public string Mask
	{
		get
		{
			return mask;
		}
		set
		{
			mask = value;
			this.Text = mask;
		}
	}

	protected override void OnKeyPress(KeyPressEventArgs e)
	{
		if (Mask != "")
		{
			e.Handled = true;
			string newText = this.Text;
			bool finished = false;
			for (int i = this.SelectionStart; i < mask.Length; i++)
			{
				switch (mask[i].ToString())
				{

						
					case "0" :
						if (Char.IsDigit(e.KeyChar) )
						{
							if(this.TextLength < mask.Length)
							{
								newText += e.KeyChar.ToString();
								finished = true;
								break;
							}
							else
							{
								newText=newText.Remove(i,this.SelectionLength);
								newText=newText.Insert(i,e.KeyChar.ToString());
							
								finished = true;
								break;
							}
						}
						else
						{
							// Invalid entry; exit and don't change the text.
							return;
						}
					default :
						// Insert the mask character.
						newText += mask[i];
						break;
				}
				if (finished)
				{ break; }
			}

			// Update the text.
			this.Text = newText;
			this.SelectionStart = this.Text.Length;
		}
	}

	protected override void OnKeyDown(KeyEventArgs e)
	{
		// Stop special characters.
		e.Handled = true;
	}
}