protected void ToLeft_Click(object sender, EventArgs e)
 {
     foreach (int i in SkillToSend.GetSelectedIndices())
     {
         SkillID = Convert.ToInt32(SkillToSend.Items[i].Value);
         ToLeftEvent(this, EventArgs.Empty);
     }
     BindSkillToSend();
 }
 private void BindSkillToSend()
 {
     SkillToSend.DataSource     = SkillRight;
     SkillToSend.DataValueField = "SkillID";
     SkillToSend.DataTextField  = "SkillName";
     SkillToSend.DataBind();
     if (AttachSkillAjax != null)
     {
         AttachSkillAjax(this, EventArgs.Empty);
     }
 }