如何将复选框控件添加到数据表？

Question

How can i add a checkbox to a datatable and bind it to a datagrid?

DataTable ColumnList = new DataTable();
ColumnList.Columns.Add("Column Fields");

int j = 1, i = 0;
CheckBox colCheckbox = new CheckBox();
foreach (Columns col in ColumnNames)
{
    colCheckbox.Name = col.ColumnName;       
    ColumnList.Rows.Add(colCheckbox); // This is getting displayed as System.Windows.Forms.CheckBox,CheckState=0
}

Please help.

Answer 1

You'll have to have a boolean field (column) in the DataTable. When you bind the DataTable to the DataGridView, a checkbox column will be created for that boolean field.

Sample Code:

var dt = new DataTable();
dt.Columns.Add(new DataColumn("Selected", typeof(bool))); //this will show checkboxes
dt.Columns.Add(new DataColumn("Text", typeof(string)));   //this will show text

var dgv = new DataGridView();
dgv.DataSource = dt;

This will bind the dt DataTable to the dgv DataGridView. The DataGridView will automatically display a DataGridViewCheckBoxColumn for the first DataColumn ( Selected ) and a DataGridViewTextBoxColumn for the second DataColumn ( Text ).

Answer 2

You have to specify the type of the column.

ColumnList.Columns.Add("Column Fields", gettype(CheckBox)); 

But why do you want to add a control to a DataTable? Why not just a string or an integer?