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RADCombo Box with CheckBox

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Sushobhit
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Sushobhit asked on 20 Jul 2012, 10:32 AM
Hi All 


I have a drop down with check box. user can select the more then one value select in check box and this value can save in the session variable after that redirect to the next page when user come back again in this page all selected check box value    those are saved in the session can set the all the check box value  checked in that drop down.

for example user can select 2 value then session["selectedvalue"]="1,2";
then how to set this selected value set in the check box of that combo box. 




thanks 

Sushobhit Raman

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Jayesh Goyani
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answered on 22 Jul 2012, 07:28 PM
Hello,

Session["selectedvalue"] = "1,2";
           if (Session["selectedvalue"] != null)
           {
               string[] strarry = Session["selectedvalue"].ToString().Split(',');
               foreach (string str in strarry)
               {
                   if (RadComboBox1.Items.FindItemByValue(str) != null)
                   {
                       RadComboBox1.Items.FindItemByValue(str).Checked = true;
                   }
               }
           }


Thanks,
Jayesh Goyani
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Princy
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answered on 23 Jul 2012, 12:46 PM
Hi Sushobhit,

You can keep track of checked items as a boolean array in the session. Here is the sample code.

ASPX:
<telerik:RadComboBox ID="RadComboBox1" runat="server" CheckBoxes="true" AutoPostBack="true" onitemchecked="RadComboBox1_ItemChecked" >
 <Items>
  ................
 </Items>
</telerik:RadComboBox>

C#:
static Boolean[] state = new Boolean[10];
protected void Page_Load(object sender, EventArgs e)
 {
  if (!IsPostBack)
  {      
   if (Session["state"] == null)
   {
    for (int i = 0; i < RadComboBox1.Items.Count; i++)
    {
     state[i] = false;
    }
    Session["state"] = state;
   }
   else
   {
    state = (Boolean[])Session["state"];
    for (int i = 0; i < RadComboBox1.Items.Count; i++)
    {
     RadComboBox1.Items[i].Checked = state[i];
    }
   }
  }
 }
 protected void RadComboBox1_ItemChecked(object sender, Telerik.Web.UI.RadComboBoxItemEventArgs e)
 {
  state[e.Item.Index] = e.Item.Checked;
  Session["state"] = state;
 }

Thanks,
Princy.
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Sushobhit
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answered on 24 Jul 2012, 12:50 PM
thanks all i have solve this problem .
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Jayesh Goyani
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Princy
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Sushobhit
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