C# de.DisplayMember=“等级”； } 捕获（例外情况除外） { MessageBox.Show（例如Message，“Error”，MessageBoxButtons.ok取消， MessageBoxIcon.Warning）； }*/ } I
de.DisplayMember=“等级”； } 捕获（例外情况除外） { MessageBox.Show（例如Message，“Error”，MessageBoxButtons.ok取消， MessageBoxIcon.Warning）； }*/ } Int32 intRows=dsData.Tables[0].Rows.Count； 尝试 { foreach（dgvDDL.Rows中的DataGridViewRow行） { if（row.IndexC# de.DisplayMember=“等级”； } 捕获（例外情况除外） { MessageBox.Show（例如Message，“Error”，MessageBoxButtons.ok取消， MessageBoxIcon.Warning）； }*/ } I,c#,datagridview,C#,Datagridview,de.DisplayMember=“等级”； } 捕获（例外情况除外） { MessageBox.Show（例如Message，“Error”，MessageBoxButtons.ok取消， MessageBoxIcon.Warning）； }*/ } Int32 intRows=dsData.Tables[0].Rows.Count； 尝试 { foreach（dgvDDL.Rows中的DataGridViewRow行） { if（row.Index
foreach (DataGridViewRow rw in this.dgvDDL.Rows)
{
if (Convert.ToString(rw.Cells["ID"].Value) == "1")
{
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn cmbGrade = new DataGridViewComboBoxColumn();
SqlConnection conn = new SqlConnection(@"");
SqlCommand cmd = new SqlCommand("SELECT AREA_CODE, GRADE [Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '1' "
+ "UNION "
+ "SELECT AREA_CODE, GRADE2[Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '1' "
+ "UNION "
+ "SELECT AREA_CODE, GRADE3[Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '1' "
+ "ORDER BY 2", conn);
cmd.CommandType = CommandType.Text;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
cmbGrade.DataSource = ds.Tables[0];
this.dgvDDL.Columns.Insert(2, cmbGrade);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
cmbGrade.ValueMember = "Grade";
cmbGrade.DisplayMember = "Grade";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
if (Convert.ToString(rw.Cells["ID"].Value) == "2")
{
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn cmbGrade = new DataGridViewComboBoxColumn();
SqlConnection conn = new SqlConnection(@"");
SqlCommand cmd = new SqlCommand("SELECT AREA_CODE, GRADE [Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '2' "
+ "UNION "
+ "SELECT AREA_CODE, GRADE2[Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '2' "
+ "UNION "
+ "SELECT AREA_CODE, GRADE3[Grade] "
+ "FROM RICH_DDL_TEST "
+ "WHERE IDENTIFIER = '2' "
+ "ORDER BY 2", conn);
cmd.CommandType = CommandType.Text;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
cmbGrade.DataSource = ds.Tables[0];
this.dgvDDL.Columns.Insert(2, cmbGrade);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
cmbGrade.ValueMember = "Grade";
cmbGrade.DisplayMember = "Grade";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
/*foreach (DataGridViewRow rw in this.dgvDDL.Rows)
{
if (Convert.ToString(rw.Cells["ID"].Value) == "1")
{
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn a = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, a);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] aList = new[] { "A", "B", "C" };
foreach (string str in aList)
{
a.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 1", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
if (Convert.ToString(rw.Cells["ID"].Value) == "2")
{
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn b = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, B)/>/>/>;
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] bList = new[] { "D", "E", "F" };
foreach (string str in bList)
{
b.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 2", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
if (Convert.ToString(rw.Cells["ID"].Value) == "3")
{
}
if (Convert.ToString(rw.Cells["ID"].Value) == "4")
{
}*/
this.dgvDDL.Focus();
try
{
SqlConnection cnSQL;
DataSet dsData;
String strQuery = "SELECT uio.course_occurrence_code [CourseCode], uio.long_description [CourseDesc], '' [Grade], uio.owning_organisation [Area], ddl.IDENTIFIER [ID] "
+ "FROM unit_instance_occurrences [uio] LEFT JOIN RICH_DDL_TEST [ddl] ON uio.UIO_ID = ddl.UIO_ID "
+ "WHERE uio.calocc_occurrence_code lIKE '16%' AND uio.owning_organisation IS NOT NULL "
+ "ORDER BY 3, 1";
//If using database class
cnSQL = database.AcquireConnection();
//If using database class
dsData = database.GetData(cnSQL, strQuery);
cnSQL.Close();
cnSQL.Dispose();
if (dsData.Tables.Count > 0)
{
dgvDDL.DataSource = dsData.Tables[0];
this.dgvDDL.Columns["Grade"].Visible = false;
this.dgvDDL.AutoGenerateColumns = false;
/*try
{
DataGridViewComboBoxColumn cmbGrade = new DataGridViewComboBoxColumn();
SqlConnection conn = new SqlConnection(@"Data Source = EBS - DB - REPORTSE; Initial Catalog = ebslive; Persist Security Info = True; User ID = sa; Password = W0rk1ngMen5");
SqlCommand cmd = new SqlCommand("SELECT AREA_CODE, 'A'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'B'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'C'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'D'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'E'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'F'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'G'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'H'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'I'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'J'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "UNION "
+ "SELECT AREA_CODE, 'K'[Grade] "
+ "FROM RICH_DDL_TEST "
+ "ORDER BY 2", conn);
cmd.CommandType = CommandType.Text;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
cmbGrade.DataSource = ds.Tables[0];
this.dgvDDL.Columns.Insert(2, cmbGrade);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
cmbGrade.ValueMember = "Grade";
cmbGrade.DisplayMember = "Grade";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}*/
}
Int32 intRows = dsData.Tables[0].Rows.Count;
try
{
foreach (DataGridViewRow row in dgvDDL.Rows)
{
if (row.Index < intRows)
{
// row.Cells["Exp_Grade"].Value = dsData.Tables[0].Rows[row.Index]["Grade"].ToString();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error detected",
MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
dsData.Tables[0].Rows.Count.ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error detected",
MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
private void dgvDDL_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void dgvDDL_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
{
/* foreach (DataGridViewRow rw in this.dgvDDL.Rows)
{
bool flaga = false;
if (Convert.ToString(rw.Cells["ID"].Value) == "1")
flaga = true;
if (flaga)
{
this.dgvDDL.Columns["Grade"].Visible = false;
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn a = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, a);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] aList = new[] { "C", "D", "E" };
foreach (string str in aList)
{
a.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 1", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
else if (Convert.ToString(rw.Cells["ID"].Value) == "2")
{
this.dgvDDL.Columns["Grade"].Visible = false;
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn a = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, a);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] aList = new[] { "D", "E", "F" };
foreach (string str in aList)
{
a.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 2", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
else if (Convert.ToString(rw.Cells["ID"].Value) == "3")
{
this.dgvDDL.Columns["Grade"].Visible = false;
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn a = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, a);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] aList = new[] { "G", "H", "I" };
foreach (string str in aList)
{
a.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 3", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
else if (Convert.ToString(rw.Cells["ID"].Value) == "4")
{
this.dgvDDL.Columns["Grade"].Visible = false;
if (!dgvDDL.Columns.Contains("Exp_Grade"))
{
try
{
DataGridViewComboBoxColumn a = new DataGridViewComboBoxColumn();
this.dgvDDL.Columns.Insert(2, a);
this.dgvDDL.Columns[2].HeaderText = "Exp_Grade";
this.dgvDDL.Columns[2].Name = "Exp_Grade";
string[] aList = new[] { "J", "K", "L" };
foreach (string str in aList)
{
a.Items.Add(str);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error at 4", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
}
}*/
}
private void dgvDDL_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
}
private void dgvDDL_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
try
{
if (e.ColumnIndex == 4)
{
if (dgvDDL.Rows[e.RowIndex].Cells[4].Value != null)
{
DataGridViewComboBoxCell comboCell = dgvDDL.Rows[e.RowIndex].Cells[0] as DataGridViewComboBoxCell;
if (dgvDDL.Rows[e.RowIndex].Cells[4].Value.ToString() == "1")
{
SetCombo(1, comboCell);
}
if (dgvDDL.Rows[e.RowIndex].Cells[4].Value.ToString() == "2")
{
SetCombo(2, comboCell);
}
if (dgvDDL.Rows[e.RowIndex].Cells[4].Value.ToString() == "3")
{
SetCombo(3, comboCell);
}
if (dgvDDL.Rows[e.RowIndex].Cells[4].Value.ToString() == "4")
{
SetCombo(4, comboCell);
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OKCancel,
MessageBoxIcon.Warning);
}
}
private void SetCombo (int comboType, DataGridViewComboBoxCell comboCell)
{
comboCell.Value = "";
comboCell.Items.Clear();
if (comboType == 1)
{
comboCell.Items.Add("A");
comboCell.Items.Add("B");
comboCell.Items.Add("C");
return;
}
if (comboType == 2)
{
comboCell.Items.Add("D");
comboCell.Items.Add("E");
comboCell.Items.Add("F");
return;
}
if (comboType == 3)
{
comboCell.Items.Add("G");
comboCell.Items.Add("H");
comboCell.Items.Add("I");
return;
}
if (comboType == 4)
{
comboCell.Items.Add("J");
comboCell.Items.Add("K");
comboCell.Items.Add("L");
return;
}
comboCell.Items.Add("A");
comboCell.Items.Add("B");
comboCell.Items.Add("C");
comboCell.Items.Add("D");
comboCell.Items.Add("E");
comboCell.Items.Add("F");
comboCell.Items.Add("G");
comboCell.Items.Add("H");
comboCell.Items.Add("I");
comboCell.Items.Add("J");
comboCell.Items.Add("K");
comboCell.Items.Add("L");
}
private void Form1_Load(object sender, EventArgs e) {
SetColumns();
AddRows();
}
private void SetColumns() {
DataGridViewComboBoxColumn comboColumn = new DataGridViewComboBoxColumn();
comboColumn.Name = "Grade";
comboColumn.HeaderText = "Grade";
comboColumn.ValueMember = "Grade";
comboColumn.DisplayMember = "Grade";
dataGridView1.Columns.Add(comboColumn);
dataGridView1.Columns.Add("ID", "ID");
}
private void AddRows() {
int newRowIndex = dataGridView1.Rows.Add();
dataGridView1.Rows[newRowIndex].Cells[1].Value = 1;
newRowIndex = dataGridView1.Rows.Add();
dataGridView1.Rows[newRowIndex].Cells[1].Value = 2;
newRowIndex = dataGridView1.Rows.Add();
dataGridView1.Rows[newRowIndex].Cells[1].Value = 3;
}
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e) {
try {
if (e.ColumnIndex == 1) {
if (dataGridView1.Rows[e.RowIndex].Cells[1].Value != null) {
DataGridViewComboBoxCell comboCell = dataGridView1.Rows[e.RowIndex].Cells[0] as DataGridViewComboBoxCell;
if (dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString() == "1") {
SetCombo(1, comboCell);
} else {
if (dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString() == "2") {
SetCombo(2, comboCell);
} else {
SetCombo(3, comboCell);
}
}
}
}
}
catch (Exception ex) {
MessageBox.Show("Error: " + ex.Message);
}
}
private void SetCombo(int comboType, DataGridViewComboBoxCell comboCell) {
comboCell.Value = "";
comboCell.Items.Clear();
if (comboType == 1) {
comboCell.Items.Add("A");
comboCell.Items.Add("B");
comboCell.Items.Add("C");
return;
}
if (comboType == 2) {
comboCell.Items.Add("D");
comboCell.Items.Add("E");
comboCell.Items.Add("F");
return;
}
comboCell.Items.Add("A");
comboCell.Items.Add("B");
comboCell.Items.Add("C");
comboCell.Items.Add("D");
comboCell.Items.Add("E");
comboCell.Items.Add("F");
}