dropdown are blank when create dynamic collum

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SQL-Server-2005

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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

Posted 23-May-13 20:52pm

Rashmikants Monpara

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Nirav D Parmar 24-May-13 3:47am

pls put up your code over here which will give better understanding
for someone to solve it.

[no name] 24-May-13 5:15am

their are 3000 lines code its not possible to put here pls give me some idea

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Nilesh Patil Kolhapur · Answer 1 · 2013-05-24T00:23:00

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.

C#

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
}

:) Enjoy