null value in view state

Question

User639567535 posted

i try to fetch report on update click button .. there is several records in gridview

i try this code

 Session["FormID"] = Convert.ToString(((ASPxGridView)sender).GetRowValues(index, "FormID"));
 else if(e.CallbackName == "UPDATEEDIT")
            {
                DateTime DateT = Convert.ToDateTime(null);
           
                if (ViewState["DateTime"] != null)
                {
                   DateT = (DateTime)ViewState["DateTime"];
                }

               
                VehId = (string)ViewState["VID"];
                _sys = new clsDe_ComplainMaster();
                 dtUpdated = _sys.SelectUpdatedNRtype(ViewState["FFID"].ToString(),VehId,DateT);
               }




                
                string VehId = (string)ViewState["VID"];
                _sys = new clsDe_ComplainMaster();
                DataTable dtUpdated = _sys.SelectUpdatedNRtype(ViewState["FormID"].ToString(), VehId, DateT);

but in this line this pass null value in form id

Session["FormID"] = Convert.ToString(((ASPxGridView)sender).GetRowValues(index, "FormID"));

and i dont want null value .. i want some value in this id e.g.1233 or may be something

how i solve it

Answer 1

User303363814 posted

It seems that you are asking a question about a DevExpress component.  You might get better answers asking in a DevExpress forum.

This is a Microsoft forum concerned with C# language issues.

Answer 2

User-271186128 posted

Hi Bakhtawar,

You can set a break point to debug your code and make sure the index is not null.

Besides, I suggest you could refer to the following code to get cell value from ASPxGridView

          ASPxTextBox txtBox1 = (ASPxTextBox)ASPxGridView1.FindRowCellTemplateControl(i, column1, "txtBox");
            ASPxTextBox txtBox2 = (ASPxTextBox)ASPxGridView1.FindRowCellTemplateControl(i, column2, "txtBox");
            if (txtBox1 == null || txtBox2 == null)
                continue;
            int id = Convert.ToInt32(ASPxGridView1.GetRowValues(i, ASPxGridView1.KeyFieldName));
            list.Add(new Record(id, txtBox1.Text, txtBox2.Text));

More details, see: https://documentation.devexpress.com/#AspNet/DevExpressWebASPxGridView_GetRowValuestopic

As PaulTheSmith said, since, this issue is related to DevExpress component, you can post your problem to DevExpress forum:

https://www.devexpress.com/Support/Center/

Best regards,
Dillion