[Solved] Error Detection in Grid Edit Form

[Chuck Lawson]

I am attempting to do a compare of values from three dropdowns in a grid edit form:
If the selected value from any of the dropdowns matches the dropdown from any other dropdown then I would like to be able to stop the update somehow.
This posts the message but I am not sure how to stop the update.
 
Here is the item created:

protected void gvEdit_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
   {
       if (e.Item is GridEditableItem && e.Item.IsInEditMode)
       {
           DropDownList list1 = (e.Item as GridEditableItem)["GridDropDownColumn999111"].Controls[0] as DropDownList;
           list1.AutoPostBack = true;
           list1.SelectedIndexChanged += new System.EventHandler(this.list1_SelectedIndexChanged);

           DropDownList list2 = (e.Item as GridEditableItem)["GridDropDownColumn9992"].Controls[0] as DropDownList;
           list2.AutoPostBack = true;
           list2.SelectedIndexChanged += new System.EventHandler(this.list2_SelectedIndexChanged);

           DropDownList list3 = (e.Item as GridEditableItem)["GridDropDownColumn9993"].Controls[0] as DropDownList;
           list3.AutoPostBack = true;
           list3.SelectedIndexChanged += new System.EventHandler(this.list3_SelectedIndexChanged);
       }
   }

Here is the index changed:

protected void list1_SelectedIndexChanged(object sender, System.EventArgs e)
    {
        String x = "System 1, System 2, and System 3 must have different values";
        DisplayMessage(y);

    }
   protected void list2_SelectedIndexChanged(object sender, System.EventArgs e)
   {
       String x = "System 1, System 2, and System 3 must have different values";
       DisplayMessage(x);

   }
   protected void list3_SelectedIndexChanged(object sender, System.EventArgs e)
   {
       String x = "System 1, System 2, and System 3 must have different values";
       DisplayMessage(x);

   }

[Jayesh Goyani]

Hello,

1. server side

protected void RadGrid1_UpdateCommand(object sender, GridCommandEventArgs e)
   {
       GridEditableItem item = e.Item as GridEditableItem;
       // compare your dropdownlis value if it is same then
       e.Canceled = true; // cancel the update command event


   }

2. client side

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridEditableItem && e.Item.IsInEditMode)
        {
            DropDownList list1 = (e.Item as GridEditableItem)["GridDropDownColumn999111"].Controls[0] as DropDownList;
            DropDownList list2 = (e.Item as GridEditableItem)["GridDropDownColumn9992"].Controls[0] as DropDownList;
            DropDownList list3 = (e.Item as GridEditableItem)["GridDropDownColumn9993"].Controls[0] as DropDownList;

            CompareValidator cw = new CompareValidator();
            cw.ID = "cv" + DateTime.Now.Ticks;
            cw.ControlToCompare = list1.ID;
            cw.ControlToValidate = list1.ID;
            cw.Operator = ValidationCompareOperator.NotEqual;
        }
    }

Thanks,
Jayesh Goyani