How to check if value exists in database or not and show a message

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C#

private void btnSearch_Click(object sender, EventArgs e)
        {


            if (searchtext.Text == "")
            {
                MessageBox.Show("Plese Inter Employee's ID you are searching for");
                searchtext.Focus();
            }
            else
            {
                
                OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\\Employees.mdb");
                OleDbDataAdapter ad = new OleDbDataAdapter("select * from Employee where EmpID=@EmpID", con);
                ad.SelectCommand.Parameters.Add("@EmpID", OleDbType.Integer);
                ad.SelectCommand.Parameters["@EmpID"].Value = int.Parse(searchtext.Text);


                DataSet ds = new DataSet();
                ad.Fill(ds, "Emp");
                DGV1.DataSource = ds.Tables["Emp"];

               
                if (ds == null)
                {
                    
                    MessageBox.Show("not found!!");

                }
                else
                {
                   MessageBox.Show("The Employee you are searching for is listed down, if you want to update the data click the arrow sign on the lift side of the record");
                }
            }

Posted 29-Mar-15 6:33am

MeftahDAKHEEL

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Comments

MeftahDAKHEEL 29-Mar-15 12:35pm

i need to check my code and update my mistaks please

ilakowalska 29-Mar-15 13:20pm

This is ok! Good code

2 solutions

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Arkadeep De · Accepted Answer · 2015-03-29T07:10:00

Solution 2

Try

C#

if(ds.Tables["Emp"].Rows.Count>0)
{
   MessageBox.Show("Found !!");
}
else
{
   MessageBox.Show("not found!!");
}

Posted 29-Mar-15 7:10am

Arkadeep De

Comments

MeftahDAKHEEL 29-Mar-15 16:55pm

@Arkadeep, it is good, thanks a lot

Arkadeep De 30-Mar-15 3:06am

u welcome

Mantu Singh · Accepted Answer · 2015-03-29T06:45:00

Solution 1

Try something like
If(ds.Tables[0].HasRows)
Message employee found

Posted 29-Mar-15 6:45am

Mantu Singh

Comments

MeftahDAKHEEL 29-Mar-15 16:58pm

thanks its corrict