Error-while retrieving value from DB Table.

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Hi, in my C# Windows Application Am trying to retrieve a interger value from the database table.

While retrieving ,value is loaded in the dataset. but while assigning that value to some variable like

C#

string s = ds.Tables[0].Rows[0]["Pid"].ToString();

it give an error as "Column 'Pid' does not belong to table Table."

Give me a solution for this.

thank u.

Posted 7-Sep-12 22:30pm

A.Anitha

Updated 7-Sep-12 22:38pm

Mohamed Mitwalli

v2

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Mohamed Mitwalli 8-Sep-12 4:42am

Make sure this column already exist

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Sandeep Mewara · Answer 1 · 2012-09-07T22:47:00

Solution 2

"Column 'Pid' does not belong to table Table."
This is because you are trying to access a value from retrieved table row assuming you have a column named 'Pid' in the row, here:

C#

ds.Tables[0].Rows[0]["Pid"].ToString();

Check your query and make sure you have a column named 'Pid' returned.

Posted 7-Sep-12 22:47pm

Sandeep Mewara

Comments

A.Anitha 8-Sep-12 4:52am

my query is,

alter procedure sp_GetPid_Research
as
select max(Pid) as "Pid" from Tb_ResearchDetails

Sandeep Mewara 8-Sep-12 5:09am

Ok. What do you see in db when you execute this SP there?

A.Anitha 8-Sep-12 5:44am

when i execute this query i got the answer as 2.. ie it correctly give the max(Pid) value...

[no name] 8-Sep-12 6:16am

I think Sandeep Mewara means what's the column name not its value!
Am I right?

Sandeep Mewara 8-Sep-12 8:28am

Yes.

Thilina Chandima · Answer 2 · 2012-09-07T22:39:00

Solution 1

I think this is because your Table does not contain a column name "Pid" so check your table's columns names.

Posted 7-Sep-12 22:39pm

Thilina Chandima