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i used this code:

SqlConnection Conn = new SqlConnection(@"server=.\Mssql2008;database=Basij;integrated security=true;");
           SqlCommand delcmd = new SqlCommand();
           if (dataGridView1.Rows.Count > 1 && dataGridView1.SelectedRows[0].Index != dataGridView1.Rows.Count - 1)
           {
               delcmd.CommandText = "DELETE FROM Tblregister WHERE Fldcode=" + dataGridView1.SelectedRows[0].Cells[0].Value.ToString() + "";
               Conn.Open();
               delcmd.ExecuteNonQuery();
               Conn.Close();
               dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index);
           }


but when i click button1 this error apear:
ExecuteNonQuery: Connection property has not been initialized.
Posted
Updated 31-Jul-11 16:51pm
v2

Little modify your code.
you write your code like:-
SqlConnection Conn = new SqlConnection(@"server=.\Mssql2008;database=Basij;integrated security=true;");
SqlCommand delcmd = new SqlCommand();
if (dataGridView1.Rows.Count > 1 && dataGridView1.SelectedRows[0].Index != dataGridView1.Rows.Count - 1)
{
delcmd.CommandText = "DELETE FROM Tblregister WHERE Fldcode=" + dataGridView1.SelectedRows[0].Cells[0].Value.ToString() + "";
Conn.Open();
delcmd.Connection=Conn;//this point is missing in your code.
delcmd.ExecuteNonQuery();
Conn.Close();
dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index);
}
   
v2
Comments
walterhevedeich 31-Jul-11 21:53pm
   
Spot on. My 5.
As Rakesh have pointed out, you need to specify which connection your data command will use. You might find this[^] useful.
   
Hi Rakesh is Right and you can also use this code:

SqlConnection Conn = new SqlConnection(@"server=.\Mssql2008;database=Basij;integrated security=true;");
SqlCommand delcmd = new SqlCommand("DELETE FROM Tblregister WHERE Fldcode=" + dataGridView1.SelectedRows[0].Cells[0].Value.ToString() + "",Conn);
if (dataGridView1.Rows.Count > 1 && dataGridView1.SelectedRows[0].Index != dataGridView1.Rows.Count - 1)
{
Conn.Open();
delcmd.ExecuteNonQuery();
Conn.Close();
dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index);
}
   
v2
Comments
RaviRanjanKr 1-Aug-11 2:05am
   
Always wrap your code in "pre" tag

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