调用编辑模板时，在gridview中的下拉列表中出现错误 [英] Error the dropdown list in gridview when call the edit template

问题描述

我在编辑模板中使用了一个带有下拉控件的网格视图.
当我单击编辑按钮时，它出现了一些错误....

I used one grid view with dropdown control in edit template.
when i click the edit button it has some error....

protected void gridFeesType_RowEditing(object sender, GridViewEditEventArgs e)
    {
        DataTable dts1 = (DataTable)ViewState["Data"];
        gridFeesType.EditIndex = e.NewEditIndex;
        int RowIndex = e.NewEditIndex;
        ViewState["row"] = RowIndex;
        
      DropDownList ddl = (DropDownList)gridFeesType.Rows[RowIndex].FindControl("TermofFees") as DropDownList;
     
        Table_();
        DataTable dtedit = (DataTable)ViewState["Table"];

ERROR--> object reference not set to instance object..

        ddl.SelectedItem.Text = dtedit.Rows[RowIndex]["TermofFees"].ToString();
    }

推荐答案

我在尝试了解您要执行的操作时遇到了麻烦.但是您的ViewState很可能不包含名为"Table"的属性.

I''m having trouble trying to understand what it is your trying to do. But more than likely your ViewState doesnt contain a property named "Table".

这篇关于调用编辑模板时，在gridview中的下拉列表中出现错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！