无法转换 'System.Data.DataRowView' 类型的对象输入 'System.IConvertible'

看起来您的 ddlDivisionId.SelectedValue 正在返回一个 DataRowView.我假设您绑定了一个 DataTable 或类似于您的下拉列表(假设这就是我们正在查看的内容).

It looks like your ddlDivisionId.SelectedValue is returning a DataRowView. I assume you bound a DataTable or similar to your dropdown list (assuming that is what we are looking at).

在这种情况下，您需要将 ddlDivisionId.SelectedValue 视为 DataRowView(可能首先转换为该对象)以从中获取值...我假设如下:>

In this case you will need to treat the ddlDivisionId.SelectedValue as a DataRowView (probably casting to that object first) to get the value out of it... I assume something like:

int i = Convert.ToInt32(((DataRowView)ddlDivisionId.SelectedValue)["id"]);

在这里，您应该将id"替换为您想要作为整数输出的数据表中的任何字段名称.

Here you should replace "id" with whatever the name of your field is in your datatable that you want to get out as an integer.