WinForm应用程序:无法设置DataGridViewCheckBoxColumn的默认值

Question

我已经创建了一个Windows，并插入了一个DataGridViewCheckBoxColumn作为网格的第一列，但是我没有成功地将默认值设置为"checked“。我尝试在插入列后的循环中和在gridview的DefaultValuesNeeded事件中设置它。有没有更简单的方法来做这件事，还是我错过了什么？

我的代码如下：

private void FillDataGrid()
    {
        BAFarmer baobj = new BAFarmer();
        gvFarmers.AutoGenerateColumns = true;
        gvFarmers.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
        gvFarmers.DataSource = baobj.GetAllFarmersCol();
        gvFarmers.Enabled = true;
        gvFarmers.ReadOnly = false;

        DataGridViewCheckBoxColumn checkColumn = new DataGridViewCheckBoxColumn();
        checkColumn.Name = "Include";
        checkColumn.ValueType = typeof(Boolean);
        checkColumn.HeaderText = "Include";
        checkColumn.Width = 50;
        checkColumn.ReadOnly = false;
        checkColumn.FillWeight = 10; //if the datagridview is resized (on form resize) the checkbox won't take up too much; value is relative to the other columns' fill values
        checkColumn.ThreeState = false;
        checkColumn.TrueValue = true;
        checkColumn.FalseValue = false;


        gvFarmers.Columns.Insert(0, checkColumn);

        foreach (DataGridViewRow row in gvFarmers.Rows)
        {
            row.Cells[checkColumn.Name].Value = true;
        }

    }

Answer 1

我能够通过向表单load事件添加代码来解决这个问题，该事件循环遍历复选框并在此时设置它们。

foreach (DataGridViewRow row in gvFarmers.Rows)
{
    DataGridViewCheckBoxCell chk = DataGridViewCheckBoxCell)row.Cells["Select"];
    chk.Value = true;
}