private void btnSelect_Click(object sender, EventArgs e) { if (cmbIssueFrom.Text == " -- Select-- " || cmbIssueTo.Text == " -- Select-- ") { //MessageBox.Show("Please Fill Required Field(s)"); //return; MessageBox.Show("Please Fill Required Field(s).", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1); return; } else if (cmbIssueFrom.Text == cmbIssueTo.Text) { // MessageBox.Show("Invalid Project Codes"); MessageBox.Show("Invalid Project Codes", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1); return; } else { Material_Releasing_Main main = new Material_Releasing_Main(); main.GetUserID(TxtUserID.Text); main.GetTranType(txttrantype.Text); main.GetParameters(cmbIssueFrom.SelectedValue.ToString(), cmbIssueTo.SelectedValue.ToString()); this.Hide(); main.Show(); } }