Multi combo first time select - problem

[ssenthil21]

I am using ext multicombo and by default iam selecting all items. When i click (unselect the checkbox) for the first time corresponding checkbox not getting de-selcted.

Even in select listener #{combo}.checkedRecords having the record i deselected.

Is that anything iam doing wrong.

Note : After first time it starts select/deselct perfectly

[ssenthil21]

Sample i used

<ext:MultiCombo ID="mcmbLocation" runat="server" DisplayField="CodeDisplayName" ValueField="Code"
AllowBlank="false" >
<Store>
<ext:Store ID="storemcmbVisitTrtOU" runat="server">
<Reader>
<ext:JsonReader IDProperty="Code">
<Fields>
<ext:RecordField Name="Code" />
<ext:RecordField Name="CodeDisplayName" />
</Fields>
</ext:JsonReader>
</Reader>
</ext:Store>
</Store>
</ext:MultiCombo>


in code behind

mcmbLocation.GetStore().DataSource = new List<Class1>() { new Class1() { Code = "1", CodeDisplayName = "1" },
new Class1() { Code = "2", CodeDisplayName = "2" },
new Class1() { Code = "3", CodeDisplayName = "3" },
new Class1() { Code = "4", CodeDisplayName = "4" },
new Class1() { Code = "5", CodeDisplayName = "5" },
};

mcmbLocation.GetStore().DataBind();


mcmbLocation.SelectAll();