创建动态collum时，下拉列表为空白 [英] dropdown are blank when create dynamic collum

问题描述

嗨朋友

i在这个网格视图中有一个动态网格视图，两个下拉框状态和城市，一个添加按钮和一个删除按钮，当我点击添加按钮生成新的动态列，当我点击删除按钮在网格视图中删除一列

我的问题是当我填写像state =>这样的记录时古吉拉特邦和城市=> Ahmedab​​ad并点击添加按钮并生成新列，但城市下拉列表是空白的，我使用更新面板但是你的工作没有，所以请你给我一个想法

hi friends
i have one dynamic grid view in this grid view two drop down box like state and city and one add button and one delete button when i click add button generate new dynamic column and when i click delete button one column are delete in grid view
and my problem is when i fill up record like state=> gujarat and city=> Ahmedabad and click add button and generate new column but city drop down are blank and i use update panel but thy are not working so nay one please give me a idea

推荐答案

您好Rashmikants，



请在ViewState中保存您的城市数据然后在按钮添加点击事件时添加新的DropDownlist将此数据绑定到该下拉列表。



例如。

Hi Rashmikants,

Please save Your City Data in ViewState then on Button Add Click event when u add new DropDownlist Bind this data to That Drop DownList.

eg.

ViewState["City"]=dataTable;
protected void ButtonAdd_Click(object _object, EventArgs eventArgs )
{
    DropDownList dropDownList =new DropDownList();
    dropDownList.DataSource=(DataTable)ViewState["City"];
    dropDownList.DataBind();
    //Add this To GridView
}

:)享受

:) Enjoy

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