How to bind listview dropdownlist for editing?

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Hi Expert,

I am using asp.net c sharp.

In my edit_event page i am editing event information using listview.

In my edittemplate textbox vind perfectly.
eg.

<td>Event Name:</td>
                <td>
                    <asp:TextBox ID="txtEditEventName" runat="server" 
                        Text='<%# Bind("event_name") %>' />
                </td>

above code working fine.

now i want dropdownlist for editing in edittemplate to edit country.
I wrote following code.

<td>Country :</td>
                <td>
                     
                    <asp:DropDownList ID="lstEditCountry" runat="server" 
                              
                            DataTextField="country_name"
                            DataValueField="country_id"
                               SelectedValue='<%# Bind("country_id") %>'
                              />

it shows only blank dropdown.
How to show all countries in this dropdownlist.

is there any event i have to use for this purpose? and how ?

Thanks in advance.......

Posted 24-Oct-11 23:04pm

udusat13

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shek124 · Accepted Answer · 2011-10-24T23:30:00

Solution 1

try this one

C#

 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
 if (e.CommandName == "Edit")
        {
            DropDownList drplist= (DropDownList)GridView1.FooterRow.FindControl("dropdownlist1");

//
//Fill the dataset in ds here
//

drplist.DataSource = ds;
   drplist.DataBind();

}
}

Posted 24-Oct-11 23:30pm

shek124

v2

Comments

udusat13 25-Oct-11 5:35am

Thanks for code..
But i am n using listview not gridview.

So which event is necessary?
Please help me?

shek124 25-Oct-11 6:26am

For Listview, use ItemDatabound Event.

udusat13 25-Oct-11 7:12am

I write following code on ItemBoundEvent.

but it throw exception object null reference.datatable working fine.
but when i control reach at point
listEditCountry.DataSource = dt; it throws exception.

ListViewDataItem item = (ListViewDataItem)e.Item;

DropDownList listEditCountry = (DropDownList)e.Item.FindControl("lstEditCountry");

try
{
string queryStrUserType = "SELECT country_id,country_name FROM crm_countries";

ClassDtBaseConnect clsDtResult = new ClassDtBaseConnect();
DataTable dt = clsDtResult.GetDataTable(queryStrUserType);

listEditCountry.DataSource = dt; //this line throw exception object null reference. datatable dt working fine.
listEditCountry.DataValueField = "country_id";
listEditCountry.DataTextField = "country_name";

listEditCountry.DataBind();

udusat13 28-Oct-11 8:31am

I used condition
if (listvwEventResult.EditIndex > -1)

Now its working.

Thanks..............