c# - 当我们从gridview选定行有相应的datatextfield时，如何在下拉列表中显示项目被选中

Question

代码：

DataSet ds = _dalEquipmentwiseCheckList.getEquipmentName();

ddEquipmentName.DataSource = ds.Tables[0].DefaultView;

ddEquipmentName.DataTextField = ds.Tables[0].Columns[1].ToString();
ddEquipmentName.DataValueField = ds.Tables[0].Columns[0].ToString();
ddEquipmentName.DataBind();

我想要的是：在 GridView 中选择一行时，应在下拉列表中选择相应的设备名称：

var selectRow = MyGridView.SelectedRow;

ddEquipmentName.SelectedValue = selectRow.Cells[2].Text;
****//this is giving me error****

Answer 1

所选值不能以这种方式工作。尝试这个：

ddEquipmentName.SelectedIndex = ddEquipmentName.Items.IndexOf(ddEquipmentName.Items.FindByText(selectRow.Cells[2].Text));

Answer 2

你可以试试 ：

GridViewRow selectRow = MyGridView.SelectedRow;    
ddEquipmentName.selectedItem.Text = selectRow.Cells[2].Text;

Answer 3

 void setDataContext()
{
    var selectRow = GridEquipmentChechList.MyGridView.SelectedRow;
    if (selectRow != null)
    {
        txtECNumber.Text = selectRow.Cells[1].Text;
        **ddEquipmentName.SelectedIndex = ddEquipmentName.Items.IndexOf(ddEquipmentName.Items.FindByText(selectRow.Cells[2].Text));**
        **ddDescription.SelectedIndex = ddDescription.Items.IndexOf(ddDescription.Items.FindByText(selectRow.Cells[3].Text));**
    }
}