在DataGridViewComboBoxColumn中设置selectedValue

Question

我有两个表：列和表（外键 - Table_ID）。我想用multicobox在dataGridView中显示列。在组合框中显示相关表（名称表），所选项目是在列中设置的值。

List<columns> columns = DataLoader.GetColumns();
List<tables> tables = DataLoader.GetTables();

this.editingDataGridView.DataSource = columns; // my dataGridView
DataGridViewComboBoxColumn comboBoxColumn = new DataGridViewComboBoxColumn();

comboBoxColumn.DisplayMember = "Table_Name";
comboBoxColumn.ValueMember = "Table_ID";
comboBoxColumn.DataSource = tables;

//add combobox column in dataGrid
this.editingDataGridView.Columns.Add(comboBoxColumn);

//AND this i want set value
int index = this.editingDataGridView.Columns.IndexOf(comboBoxColumn);
for (int i = 0; i < columns.Count; i++)
{
   this.editingDataGridView.Rows[i].Cells[index].Value = columns[i].Table_ID;
}

运行后，我使用带有dataSource的combobox列获得gridView，但没有选择默认值！

Answer 1

关键点是

comboBoxColumn.DataPropertyName = "Table_ID";

需要设置dataGridComboBoxColumn的DataPropertyName

More this

Answer 2

在vb.net中，我找到了这个解决方案

Dim cbx As DataGridViewComboBoxCell = dgvEstudios.Rows(x).Cells(1)
cbx.Value = Trim("String value")