There is no row at position 0. In code

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if (pay_typeComboBoxEdit.Text == "راتب")
{
paidMoneySpinEdit.ReadOnly = true;
paidMoneySpinEdit.Value = Convert.ToDecimal(PROCESS.GET_Salary(emp_idComboBoxEdit.Text, dateDateEdit.DateTime).Rows[0][0].ToString());
}
else
{
paidMoneySpinEdit.ReadOnly = false;
paidMoneySpinEdit.Value = 0;
}

What I have tried:

show this error when run the form project in C#

Posted 27-Dec-17 23:01pm

mostafaebead

Updated 27-Dec-17 23:34pm

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[no name] 28-Dec-17 5:08am

It means you don't have data in your DataTable. Debug your code and check ....Rows.Count. The value will be most probably 0

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Karthik_Mahalingam · Answer 1 · 2017-12-27T23:30:00

Validate the Index before accessing it from the collection.

paidMoneySpinEdit.ReadOnly = true;
         DataTable dt = PROCESS.GET_Salary(emp_idComboBoxEdit.Text, dateDateEdit.DateTime);
         if(dt!= null && dt.Rows.Count>0 && dt.Columns.Count>0) { // validate the collection
         paidMoneySpinEdit.Value = Convert.ToDecimal(dt.Rows[0][0].ToString());
         }

OriginalGriff · Answer 2 · 2017-12-27T23:34:00

The error is pretty explicit:

There is no row at position 0.

That means that whatever PROCESS.GET returns, it has no rows. That may be by design: if there is no data which matches your criteria (and I assume that's what the second parameter is for) then it can;t return any row info.

I'd suggest that you check the rows count and do something if there are no matches:

var data = PROCESS.GET_Salary(emp_idComboBoxEdit.Text, dateDateEdit.DateTime);
if (data.Rows.Count > 0)
   {
   paidMoneySpinEdit.Value = Convert.ToDecimal(data.Rows[0][0].ToString());
   }
else
   {
   ...  Up to you
   }

There is no row at position 0. In code

2 solutions

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