在Datagridview中创建列组合框

Question

我是C#新手。 我想在Datagridview第一列中创建combobox 。 以下是我编写的例程。 但这是在设置网格后在最后一列中添加组合。

为了设置网格，我尝试了以下代码：

private void SetGrid()
{
    dgDetail.AutoGenerateColumns = false;
    dgDetail.ColumnCount = 5;
    dgDetail.Columns[0].Name = "Debit";
    dgDetail.Columns[0].HeaderText = "Debit Account Name";
    dgDetail.Columns[1].Name = "Bank";
    dgDetail.Columns[1].HeaderText = "Bank";
    dgDetail.Columns[2].Name = "ChqNo";
    dgDetail.Columns[2].HeaderText = "CC/Chq No";
    dgDetail.Columns[3].Name = "ChqDate";
    dgDetail.Columns[3].HeaderText = "Chq Date";
    dgDetail.Columns[4].Name = "Amount";
    dgDetail.Columns[4].HeaderText = "Amount";
    dgDetail.AllowUserToDeleteRows = true;
    dgDetail.Columns[0].Width = 280;
    dgDetail.Columns[1].Width = 160;
    dgDetail.Columns[2].Width = 90;
    dgDetail.Columns[3].Width = 90;
    dgDetail.Columns[4].Width = 120;
    dgDetail.RowsDefaultCellStyle.ForeColor = Color.Black;
    dgDetail.RowsDefaultCellStyle.BackColor = Color.White;
    dgDetail.Font = new Font("Arial", 9, FontStyle.Regular);
}

用于创建从数据库填充的组合框。

private void FillGridCombo()
{
    SqlConnection sqlConnection = new SqlConnection(strCon);
    sqlConnection.Open();
    try
    {
        string selectQueryStringMonth = "SELECT accode, GLAC FROM glmast where (actype = 'CSH' and titleac <> 'PDP') OR TITLEAC = 'DIS' ORDER BY GLAC";

        SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(selectQueryStringMonth, sqlConnection);
        SqlCommandBuilder sqlCommandBuilder = new SqlCommandBuilder(sqlDataAdapter);

        DataTable dataTable = new DataTable();
        sqlDataAdapter.Fill(dataTable);
        BindingSource bindingSourceMonth = new BindingSource();
        bindingSource.DataSource = dataTable;

        //Adding  Combo
        DataGridViewComboBoxColumn ColumnAcc = new DataGridViewComboBoxColumn();
        ColumnAcc.DataPropertyName = "Debit Account Name";
        ColumnAcc.HeaderText = "Debit Account Name";
        ColumnAcc.Width = 280;

        ColumnAcc.DataSource = bindingSourceMonth;
        ColumnAcc.ValueMember = "accode";
        ColumnAcc.DisplayMember = "GLAC";

        dgDetail.Columns.Add(ColumnAcc);
        dgDetail.DataSource = bindingSource;
    }

    catch (Exception ex)
    {
        MessageBox.Show("Error : " + ex.Message, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }

    finally
    {
        if (sqlConnection.State != ConnectionState.Closed)
        sqlConnection.Close();
    }
}

我正在这样对NewData（）调用这两个过程。

private void NewData()
{
    if (dgDetail.DataSource != null)
        dgDetail.DataSource = null;
    else
        dgDetail.Rows.Clear();

    ClearData();
    CtrlEnable();
    SetGrid();
    FillGridCombo();
}

帮助/指导我实现这一目标。，

Answer 1

采用

dgDetail.Columns.Insert(0, ColumnAcc);

代替

dgDetail.Columns.Add(ColumnAcc);

使用“ Add ，只需将其添加为最后一列，而使用“ 插入”时 ，则可以选择添加位置。

公共虚拟无效Insert（int columnIndex，DataGridViewColumn dataGridViewColumn）

请注意， columnIndex是从零开始的索引，因此第一列是0

Answer 2

您可以这样使用Insert方法而不是Add ：

dgDetail.Columns.Insert(0,ColumnAcc);