CODEWITHSUNDEEP
c#asp.net
Alex
Alex

Reputation: 3958

asp dropdown reload page when setting dropdown.selectedvalue

I have the following asp dropdown:

    <asp:DropDownList ID="ArticleCategories" runat="server" AppendDataBoundItems="true" CssClass="ArticleCategoriesDropDown" onselectedindexchanged="mCategoryItemSelected" AutoPostBack="True"> 
        <asp:ListItem Text="Select Category" Value="" />
    </asp:DropDownList>

Once a selection has been made, and the data loaded, I want to set the value in the dropdown to display the value chosen by the user.

I am doing this by:

ArticleCategories.SelectedValue = CategoryID.ToString();

This works fine the first time, but from then the page is stuck on that selection, as the selected value gets loaded before the new value can load.

I have tried disabling the itemchangelistener by:

ArticleCategories.SelectedIndexChanged += new EventHandler(doNothing);

But that does not work.

I have also tried to disable postback which also does not work.

Any ideas?

Upvotes: 0

Views: 356

Answers (3)

Neeraj
Neeraj

Reputation: 4489

Hey before selecting another item from Dropdown you should clear previous selection then selected another one.

ArticleCategories.ClearSelection();

Hope it helps you.

Upvotes: 0

Md. Parves Kawser
Md. Parves Kawser

Reputation: 78

You can do Autopostback= false

<asp:DropDownList ID="ArticleCategories" runat="server" AppendDataBoundItems="true" CssClass="ArticleCategoriesDropDown" onselectedindexchanged="mCategoryItemSelected" AutoPostBack="False"> 
    <asp:ListItem Text="Select Category" Value="" />
</asp:DropDownList>

Upvotes: 0

Rob Tillie
Rob Tillie

Reputation: 1147

You should only set the selection when loading the page the first time. In ASP.NET, you can achieve this by checking the IsPostBack property:

if(!IsPostBack)
{
    ArticleCategories.SelectedValue = CategoryID.ToString(); 
}

Upvotes: 1

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