done db2
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0ec7dede32
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@ -23,9 +23,70 @@ namespace Database2
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private void cboTest_SelectedIndexChanged(object sender, EventArgs e)
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private void cboTest_SelectedIndexChanged(object sender, EventArgs e)
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{
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{
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SqlConnection connString = null;
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var myStudentID = "";
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var myQuery = "";
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if (cboTest.IsHandleCreated && cboTest.Focused)
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try
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{
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//retrieve the student id
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myStudentID = cboTest.SelectedValue.ToString().Trim();
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myQuery = "SELECT student_id, fname, lname, acct_bal, dob FROM student WHERE student_id = '" +
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myStudentID + "'";
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//create the connection string
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connString =
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new SqlConnection(
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"server=74.37.2.53; initial catalog=College2; connect timeout=30; User ID=admin;Password=password;");
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//sql command
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var cmdString = new SqlCommand();
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connString.Open(); //open the connection
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//clear any parameters
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cmdString.Parameters.Clear();
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//link the connection
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cmdString.Connection = connString;
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//create the command type
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cmdString.CommandType = CommandType.Text;
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//set the timeout
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cmdString.CommandTimeout = 1500;
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//set the command text
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cmdString.CommandText = myQuery;
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//adapter and dataset
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var adapter = new SqlDataAdapter();
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adapter.SelectCommand = cmdString;
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var ds = new DataSet();
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adapter.Fill(ds);
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//check to see if any record is returned
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if (ds.Tables[0].Rows.Count > 0)
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{
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dgvStudents.Visible = true;
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//get data source
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dgvStudents.DataSource = ds.Tables[0];
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//adjust aesthetics
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dgvStudents.AlternatingRowsDefaultCellStyle.BackColor = Color.LightGreen;
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// Set the row and column header styles.
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dgvStudents.ColumnHeadersDefaultCellStyle.ForeColor = Color.White;
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dgvStudents.ColumnHeadersDefaultCellStyle.BackColor = Color.Green;
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dgvStudents.ColumnHeadersDefaultCellStyle.Font = new Font(dgvStudents.Font, FontStyle.Bold);
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}
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else
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{
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dgvStudents.Visible = false;
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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finally
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{
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//close the connection
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connString.Close();
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}
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}
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}
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private void dgvStudents_CellContentClick(object sender, DataGridViewCellEventArgs e)
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private void dgvStudents_CellContentClick(object sender, DataGridViewCellEventArgs e)
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