[CLOSED] Ext Combobox - Selected value changed from code behind on postback event is not reflected on the UI

[Maitreya]

I have an Ext.Net combobox. I am using version 2 of Ext.Net and v4.0 of .Net

On a particular event, I am setting its value from javascript.

 
                Ext.getCmp('ddlCountryOfRisk_ddl').store.clearFilter();
                Ext.getCmp('ddlCountryOfRisk_ddl').store.load();
                Ext.getCmp('ddlCountryOfRisk_ddl').clearValue();
                Ext.getCmp('ddlCountryOfRisk_ddl').setValue(cntry);
                Ext.getCmp('ddlCountryOfRisk_ddl').readOnly = true;

Now if I am trying to change the selected value from the code behind on a postback event, this changed value is not showing back on the UI.

 
 ddlCountryOfRisk.ReadOnly = false; 
 ddlCountryOfRisk.SelectedValue = value;

The same issue occurs if I change the value from UI and then try to set it from code behind on post back event.


Please assist me.

[Daniil]

Hi @Maitreya,

Please provide a full test case to reproduce the issue.

[Maitreya]

I have a form which contains a combobox and a gridpanel into it.

RowEditing direct event of the GridPanel, I am calling a method which sets the selected value for the combobox.

 

<Plugins>
                <ext:RowEditing ID="reOwner" runat="server" ClicksToEdit="2" CommitChangesText="You need to cancel or commit your changes" SaveHandler="ValidateAddParent">
                    <Listeners>
                        <BeforeEdit Fn="EnableOwnershipEditors" />
                        <CancelEdit Fn="EditOwnershipCancelled" />
                    </Listeners>
                    <DirectEvents>
                        <Edit OnEvent="RecordEdited" Before="insertOwner = false;" After="EnableAddButton(#{reOwner});SetUltimateParent();">
                            <ExtraParams>
                                <ext:Parameter Name="Values" Value="Ext.encode(GetModifiedValues(#{pnlOwnership}))"
                                    Mode="Raw" />
                            </ExtraParams>
                            <EventMask ShowMask="true" CustomTarget="#{pnlOwnership}" />
                        </Edit>
                    </DirectEvents>
                </ext:RowEditing>
            </Plugins>

Code Behind:

 

protected void RecordEdited(object sender, DirectEventArgs e)
        {
            var json = e.ExtraParams["Values"];
           
            .... 


           ddlCountryOfRisk.SelectedItem.Value = value
           ...
            
            }
        }

This selected value set on the direct event is not reflected on the UI.

[Vladimir]

Hi

If you need to change selected value in combo during direct event then use the following code

this.ComboBox2.SelectedItems.Clear();
this.ComboBox2.SelectedItems.Add(new Ext.Net.ListItem { Value = "0" });
this.ComboBox2.UpdateSelectedItems();

It is demonstrated in the following online example
https://examples2.ext.net/#/Form/Com...Items_Actions/