Error in Dataset while filling with sqldataAdapter

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Dear friends,
i am getting the following error:

Value cannot be null.
Parameter name: dataTable

on following Code Line,

C#

(adpTotalQuantity.Fill(dsTotalQuantity.Tables["Req_TotalInventoryRequired"]);

from here it goes into the Exceptions....wht could be issue with it?

my code is as below

C#

SqlCommand cmdTotalQuantity = new SqlCommand("GetRequestedInventoryDetls", conTotalQuantity);
                cmdTotalQuantity.CommandType = CommandType.StoredProcedure;
                cmdTotalQuantity.Connection = conTotalQuantity;

                cmdTotalQuantity.Parameters.Add("@RequestNo", SqlDbType.Int);
                cmdTotalQuantity.Parameters["@RequestNo"].Value = Convert.ToInt32(RequestNo);

                SqlDataAdapter adpTotalQuantity = new SqlDataAdapter(cmdTotalQuantity);
                DataSet dsTotalQuantity = new DataSet();

                adpTotalQuantity.Fill(dsTotalQuantity.Tables["Req_TotalInventoryRequired"]);

pl reply,
aamir

Posted 1-Jul-12 18:18pm

aamir07

Updated 1-Jul-12 18:21pm

Mehdi Gholam

v2

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Mehdi Gholam · Answer 1 · 2012-07-01T18:22:00

Solution 1

Use the following line :

C#

adpTotalQuantity.Fill(dsTotalQuantity);

Posted 1-Jul-12 18:22pm

Mehdi Gholam

Nathan Stiles · Answer 2 · 2012-07-01T18:23:00

Solution 2

dsTotalQuantity.Tables["Req_TotalInventoryRequired"] is producing a null value. Try dsTotalQuantity.Tables[0] or whatever the index is.

Posted 1-Jul-12 18:23pm

Nathan Stiles

_Amy · Answer 3 · 2012-07-01T18:29:00

Solution 3

Hi,
Try this:

C#

DataSet dsTotalQuantity = new DataSet();
DataTable dtReq=new DataTable();
adpTotalQuantity.Fill(dtReq);
dtReq.Name = "Req_TotalInventoryRequired";
dsTotalQuantity.Tables.Add(dtReq);

All the best.
--Amit

Posted 1-Jul-12 18:29pm

_Amy

Comments

aamir07 2-Jul-12 0:47am

Dear Amit,
i have used ur code but it gives me the error :object reference not set to an instance of an object

the error is in for loop:
for (int j = 0; j <= dsTotalQuantity.Tables["Req_TotalInventoryRequired"].Rows.Count; j++)
{
MaterialDescpt += ds.Tables["Req_TotalInventoryRequired"].Rows[j]["MaterialDesc"].ToString();
TotalUnitsRequired += ds.Tables["Req_TotalInventoryRequired"].Rows[j]["TotalUnitsRequired"].ToString();
}

_Amy 2-Jul-12 0:53am

This error is coming just because your data-table is NULL.
Try putting a break-point and check the flow of data. whether it is coming in your data-set or not. Because whatever i gave you that is best from my knowledge. There is something which you are missing in-between.