用InsertItemTemplate中的DropDownList替换TextBox

I thought this would be easy and straightforward, but I seem to be having an issue with it.

我认为这很容易和直截了当，但我似乎遇到了问题。

Basically, I have this in a formview:

基本上，我在formview中有这个：

 <asp:TextBox ID="StatusTextBox" runat="server" Text='<%# Bind("Status") %>' />

And I want to replace it with this:

我想用这个替换它：

 <asp:DropDownList ID="StatusDropdown" runat="server">
       <asp:ListItem Selected="True" Value="A">Active</asp:ListItem>
       <asp:ListItem Value="I">Inactive</asp:ListItem>
  </asp:DropDownList>

I'm not exactly sure how to bind this like the Textbox is bound.

我不确定如何绑定这个绑定文本框。

Is there a straightforward answer?

有一个直截了当的答案吗？

2 个解决方案

#1

Codebehind is not a hack, actually it's best practise since you have full control and compiler support (shows errors at compile time and avoids careless mistakes)

Codebehind不是黑客，实际上它是最好的做法，因为你有完全的控制和编译器支持（在编译时显示错误并避免粗心的错误）

For example (assuming that the DropDownList is in the EditItemTemplate):

例如（假设DropDownList在EditItemTemplate中）：

private void FormView1_DataBound(object sender, System.EventArgs e)
{
    switch (FormView1.CurrentMode)
    {
        case FormViewMode.ReadOnly:
            break;
        case FormViewMode.Edit:
            // note that the DataSource might be a different type
            DataRowView drv = (DataRowView)FormView1.DataSource;
            DropDownList StatusDropdown = (DropDownList)FormView1.FindControl("StatusDropdown");
            // you can also add the ListItems programmatcially via Items.Add
            StatusDropdown.DataSource = getAllStatus(); // a sample method that returns the datasource
            StatusDropdown.DataTextField = "Status";
            StatusDropdown.DataValueField = "StatusID";
            StatusDropdown.DataBind();
            StatusDropdown.SelectedValue = drv["StatusID"].ToString();
            break;
        case FormViewMode.Insert:
            break;
    }
}

#2

Bind it to the SelectedValue property as so:

将它绑定到SelectedValue属性，如下所示：

 <asp:DropDownList ID="StatusDropdown" runat="server" SelectedValue='<%# Bind("Status") %>'>

The value in status has to match the value of a drop down list item.

状态中的值必须与下拉列表项的值匹配。

#1