[CLOSED] Keep values in Combo Box after postback

[tjshin]

Hello,

I have following code and after the location combox is selected, post back happens. But after post back, location combo box values no longer there. How can I keep the values in location combo box after postback.

Default.aspx

<asp:SqlDataSource ID="CityTownDS" runat="server" ConnectionString="<%$ ConnectionStrings:SiteConnectionString %>"
SelectCommand="citytown" SelectCommandType="StoredProcedure" FilterExpression="active = 1"></asp:SqlDataSource>

<asp:SqlDataSource ID="LocationDS" runat="server" ConnectionString="<%$ ConnectionStrings:SiteConnectionString %>"
SelectCommand="location" SelectCommandType="StoredProcedure"></asp:SqlDataSource>

<ext:Store runat="server" ID="CityTownListStore" DataSourceID="CityTownDS">
<Reader>
<ext:JsonReader IDProperty="c_id">
<Fields>
<ext:RecordField Name="c_id" Type="Int" Mapping="c_id" />
<ext:RecordField Name="c_name" Type="String" Mapping="c_name" />
</Fields>
</ext:JsonReader>
</Reader>
</ext:Store>

<ext:Store runat="server" ID="LocationListStore" DataSourceID="LocationDS" AutoLoad="false" OnRefreshData="loc_LocationRefresh">
<DirectEventConfig>
<EventMask ShowMask="false" />
</DirectEventConfig>
<Reader>
<ext:JsonReader IDProperty="l_id">
<Fields>
<ext:RecordField Name="l_id" Type="Int" Mapping="l_id" />
<ext:RecordField Name="l_name" Type="String" Mapping="l_name" />
</Fields>
</ext:JsonReader>
</Reader>
</ext:Store>

<ext:FieldSet ID="FieldSet1" runat="server" Title="Search by Location" Collapsible="true" Layout="form">
<Items>
<ext:CompositeField ID="CompositeField1" runat="server" FieldLabel="City / Town">
<Items>
<ext:ComboBox ID="CityTownComboBox" StoreID="CityTownListStore" Width="250" runat="server" Editable="True" TypeAhead="true" Mode="Local" ForceSelection="true" TriggerAction="All" SelectOnFocus="true" DisplayField="c_name" ValueField="c_id"  EmptyText="invalid city town">
<Listeners>
<Select Handler="#{LocationComboBox}.clearValue(); #{LocationListStore}.reload();" />
</Listeners>
</ext:ComboBox>
</Items>
</ext:CompositeField>
                                    
<ext:CompositeField ID="CompositeField2" runat="server" FieldLabel="Location">
<Items>
<ext:ComboBox ID="LocationComboBox" StoreID="LocationListStore" width="250" runat="server" EmptyText="Loading..."
 ValueNotFoundText="No location" TypeAhead="true" Mode="Local" ForceSelection="true" TriggerAction="All"  DisplayField="l_name" ValueField="l_id" AutoPostBack="true" AutoPostBackEvent="Select">
</ext:ComboBox>
</Items>
</ext:CompositeField>
</Items>
</ext:FieldSet>

Default.aspx.vb

Protected Sub LocationComboBox_ItemSelected(ByVal sender As Object, ByVal e As System.EventArgs) Handles LocationComboBox.ItemSelected
        ViewState("l_id") = LocationComboBox.SelectedItem.Value
End Sub

[Daniil]

Hi,

Please wrap any code in [CODE ] tags, see the link below.

I see it's your second post on the forum. So, please, when you have a chance please read
http://forums.ext.net/showthread.php...ing-New-Topics

Regarding the question

Please clarify why do you need AutoPostBack="true" for ComboBox?

[Vladimir]

Hi,

I guess that you have to rebind the store

protected void Page_Load(object sender, EventArgs e)
{
     if(!X.IsAjaxRequest)
     {       
          LocationListStore.DataBind();
     }
}

[tjshin]

I am using ASP.NET calendar and requires postback to execute the functions for calendar.

[tjshin]

Hi,

I guess that you have to rebind the store

protected void Page_Load(object sender, EventArgs e)
{
     if(!X.IsAjaxRequest)
     {       
          LocationListStore.DataBind();
     }
}

I tried this but still won't show.
Thanks.

[Vladimir]

Hi,

Why do you have AutoLoad="false"? I think it prevents values loading