Inserting On the basis of query string

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In my project i have two pages In first i have bind data in grid and in second i want to insert data so i have made a query string for it in first page but when i am passing that query string in second page it shows System.FormatException: Input string was not in a correct format. exception
My code is as

C#

  if (e.CommandName == "AddMasterData")
        {
            Response.Redirect("SubMasterData.aspx?ValueTypeID=" + Convert.ToString(e.CommandArgument) + "?mode=Add");
        }

and on second page 
 TenderManagement.Model.ValueType masterdata = new TenderManagement.Model.ValueType();
        masterdata.ValueTypeID = Convert.ToDecimal(Request.QueryString["ValueTypeID"]);
        masterdata.ValueTypeName = Convert.ToString(txtSubMasterData.Text.Trim());

can anyone help !!
thanks in advance :)

Posted 7-Apr-13 20:50pm

Vishal Pand3y

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V. · Accepted Answer · 2013-04-07T20:54:00

Solution 1

is e.CommandArgument a Decimal?
I'm not sure, but after Convert.ToString(e.CommandArgument) you do + "?mode=Add" I think it should be + "&mode=Add"

hope this helps.

Posted 7-Apr-13 20:54pm

V.

Comments

Vishal Pand3y 8-Apr-13 3:02am

no its not working and e.CommandArgument is a string

Vishal Pand3y 8-Apr-13 3:25am

actually problem is not on the first part of code its in second part ie
masterdata.ValueTypeID = Convert.ToDecimal(Request.QueryString["ValueTypeID"]);
What to pass is query string ???

V. 8-Apr-13 3:36am

Make sure the value of e.CommandArgument is parsable as Decimal. if there it contains letters or signs other then + or - it will fail. You can set a breakpoint on that line. Then when it breaks, select Request.QueryString["ValueTypeId"] and right-click. Select quickwatch from the dropdown and check what's in the value.

sainadh.chintha · Accepted Answer · 2013-04-07T21:27:00

hi pandey,
first modify the request like below...
Response.Redirect("SubMasterData.aspx?ValueTypeID=" + Convert.ToString(e.CommandArgument) + "&mode=Add");

masterdata.ValueTypeID = Convert.ToDecimal(Request.QueryString["ValueTypeID"]);

The string should contains only numbers,it is possible convert into decimal.
If it contains any letters it cannot parse to decimal. Otherwise U should change the datatype of the valuetypeid to string.