[FIXED] [#922] [3.3] ComboBox SelectedItem problem

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Oct 14, 2015, 10:08 AM
anwichmann

[FIXED] [#922] [3.3] ComboBox SelectedItem problem

I got some problems using the ComboBox Controls.
For some reason the SelectedItem.Value property is null only for some items in the combobox.
For other selected items everything works. I don't get it why this happens.

The ComboBox is defined as followed:

Code:

<ext:ComboBox ID="CancelPeriodType" runat="server" Disabled="false" Width="80" AllowBlank="true" MsgTarget="Side" InvalidCls="" Editable="false" ValueField="Key" DisplayField="Value" EmptyText="Monate" FieldLabel=""> <Store> <ext:Store runat="server" ModelName="EnumModel"/> </Store> </ext:ComboBox>

using this model

Code:

<ext:Model runat="server" Name="EnumModel"> <Fields> <ext:ModelField Name="Key" /> <ext:ModelField Name="Value" /> </Fields> </ext:Model>

It is filled in the page_load with this line:

Code:

this.CancelPeriodType.GetStore().DataSource = this.GetEnumTranslation<BasContractCancelPeriodType>();

which basicly creates an IList<KeyValuePair<T, string>> with the EnumValue as key and the translated String as value.

It looks like the data is submitted correctly:

Code:

_GUIDab5153de_ddcd_44ba_8522_98b210b79d19_PORTAL49PORTLET116_UC_ContractRuntime_CancelPeriodType_state

is either

Code:

[{"value":"Months","text":"Monate","index":2}]

which gives SelectedItem.Value = null.

But

Code:

[{"value":"Weeks","text":"Wochen","index":1}]

works and gives SelectedItem.Value = "Weeks".

Please help me asap, as I'm messing around with this issue for days now!
Oct 14, 2015, 2:57 PM
Daniil

Hi @anwichmann,

I don't quite have any ideas what might go wrong. Could you, please, provide a full test case to reproduce the issue?
Oct 14, 2015, 4:55 PM
anwichmann

Sorry, but I couldn't reproduce it with a copy and paste version.
Oct 14, 2015, 10:40 PM
anwichmann

Ok, I think I finally found the answer.

It looks like the EmptyText is causing the problem.
If the EmptyText equals the Text of an Item in the combobox the SelectedItem is not set correctly if the an Item with this text is selected.

This is definitely a bug and needs to be fixed.
Oct 15, 2015, 8:25 AM
Daniil

Thank you for pointing that out.

Created an Issue:
https://github.com/extnet/Ext.NET/issues/922

I am investigating a possible solution.

Here is a test case.

1. Select the second item
2. Click the Submit button
3. SelectedItem.Value is empty

Example

Code:

<%@ Page Language="C#" %> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (!X.IsAjaxRequest) { Store store = this.ComboBox1.GetStore(); store.DataSource = new object[] { new object[] { "1", "Item 1" }, new object[] { "2", "Item 2" }, new object[] { "3", "Item 3" } }; } } protected void Submit(object sender, DirectEventArgs e) { X.Msg.Alert("Submit", this.ComboBox1.SelectedItem.Value).Show(); } </script> <!DOCTYPE html> <html> <head runat="server"> <title>Ext.NET v3 Example</title> </head> <body> <form runat="server"> <ext:ResourceManager runat="server" /> <ext:Button runat="server" Text="Submit" OnDirectClick="Submit" /> <ext:ComboBox ID="ComboBox1" runat="server" DisplayField="text" ValueField="value" EmptyText="Item 2"> <Store> <ext:Store runat="server"> <Model> <ext:Model runat="server"> <Fields> <ext:ModelField Name="value" /> <ext:ModelField Name="text" /> </Fields> </ext:Model> </Model> <Reader> <ext:ArrayReader /> </Reader> </ext:Store> </Store> </ext:ComboBox> </form> </body> </html>
Oct 16, 2015, 10:17 AM
Daniil

It has been fixed in the SVN trunk revision #6601. It goes to the 3.3 release.
Oct 19, 2015, 8:01 AM
anwichmann

Thanks for the quick fix.