display error "There is no row at position 0".

Question

1.00/5 (1 vote)

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When I run windows application, display error.

There is no row at position 0.

VB

Dim str1 = TBSER.Text
Dim sql1 As String = "select * from EmpInfo where EmpName='" + str1 + "'"
adp = New SqlDataAdapter(sql1, cn)
ds.Clear()
adp.Fill(ds)
TBID.Text = ds.Tables("EmpInfo").Rows(inc).Item(0)
TBNAME.Text = ds.Tables("EmpInfo").Rows(inc).Item(1)
TBAD1.Text = ds.Tables("EmpInfo").Rows(inc).Item(2)
TBAD2.Text = ds.Tables("EmpInfo").Rows(inc).Item(3)
CBCITY.Text = ds.Tables("EmpInfo").Rows(inc).Item(4)
TBTEL1.Text = ds.Tables("EmpInfo").Rows(inc).Item(5)
TBTEL2.Text = ds.Tables("EmpInfo").Rows(inc).Item(6)
TBMOB.Text = ds.Tables("EmpInfo").Rows(inc).Item(7)
CBFAC.Text = ds.Tables("EmpInfo").Rows(inc).Item(8)

Posted 16-Feb-11 4:19am

somil030

Updated 16-Feb-11 4:29am

Henry Minute

v2

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Comments

Ryan Zahra 16-Feb-11 10:26am

Debug your program and add a watch to the dataset. check if there is a table in the dataset and also check if the table contains any rows.

Sergey Alexandrovich Kryukov 16-Feb-11 12:06pm

Very bad error text and whole idea. You need to change your design and prevent it.
--SA

3 solutions

Solution 1

Seems to be that whatever the value is in TextBox TBSER there is no record where EmpName is equal to that. Have a look into you DB.

Cheers!

Posted 16-Feb-11 4:28am

Manfred Rudolf Bihy

Solution 3

You should avoid constructing your query string in the way that you are as it is vulnerable to SQL Injection attacks. You should learn to use Parameterized Queries and always use them so that it becomes second nature.

Posted 16-Feb-11 4:38am

Henry Minute

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jim lahey · Accepted Answer · 2011-02-16T04:29:00

Solution 2

Looks to me like your query returned nothing. Try running the query in SQL Management Studio to confirm this. You can handle the case of having 0 rows by:

if(ds.Tables["EmpInfo"].Rows.Count == 0)
{
//your code here
}

Posted 16-Feb-11 4:29am

jim lahey

Comments

Dylan Morley 16-Feb-11 10:41am

+5, code defensively - avoids lots of issues!