Hello Telerik Team,
I have same issue, but i tried the solution suggested above, but it didn't work for me..
I do have A RadComoBox which is supposed on its ClientSelectedIndex to set a hidden field to the its selected value, here is the code:
<
telerik:radajaxmanager
runat
=
"server"
id
=
"RadAjaxManager1"
>
<
AjaxSettings
>
<
telerik:AjaxSetting
AjaxControlID
=
"rcbCountry"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlSource"
LoadingPanelID
=
"RadAjaxLoadingPanel1"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
<
telerik:AjaxSetting
AjaxControlID
=
"rcbSuppliers"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlSource"
LoadingPanelID
=
"RadAjaxLoadingPanel1"
/>
<
telerik:AjaxUpdatedControl
ControlID
=
"rdoUnitsOfMesurement"
/>
<
telerik:AjaxUpdatedControl
ControlID
=
"rdoUnits"
/>
<
telerik:AjaxUpdatedControl
ControlID
=
"txtQuantity"
/>
<
telerik:AjaxUpdatedControl
ControlID
=
"hiddenSupplierId"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
<
telerik:AjaxSetting
AjaxControlID
=
"rcbBrands"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlSource"
LoadingPanelID
=
"RadAjaxLoadingPanel1"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
<
telerik:AjaxSetting
AjaxControlID
=
"rcbSubBrands"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlSource"
LoadingPanelID
=
"RadAjaxLoadingPanel1"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
</
AjaxSettings
>
</
telerik:radajaxmanager
>
<
asp:Panel
runat
=
"server"
ID
=
"pnlSource"
>
<
table
width
=
"100%"
cellpadding
=
"0"
cellspacing
=
"3"
>
<
tr
>
<
td
align
=
"right"
valign
=
"top"
style
=
"width: 168px"
>
<
asp:Label
ID
=
"lblCountry"
runat
=
"server"
></
asp:Label
>
</
td
>
<
td
>
<
table
width
=
"100%"
cellpadding
=
"0"
cellspacing
=
"0"
>
<
tr
>
<
td
>
<
telerik:radcombobox
runat
=
"server"
id
=
"rcbCountry"
autopostback
=
"true"
width
=
"195px"
tabindex
=
"3"
onselectedindexchanged
=
"rcbCountry_SelectedIndexChanged"
causesvalidation
=
"false"
>
</
telerik:radcombobox
>
<
asp:CustomValidator
ID
=
"customValidatorCountryIcon"
runat
=
"server"
ClientValidationFunction
=
"ValidateCountry"
Display
=
"Dynamic"
>
<
img
alt
=
""
src
=
"/Include/Img/icon_error.gif"
/>
</
asp:CustomValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
>
<
asp:CustomValidator
ID
=
"customValidatorCountry"
runat
=
"server"
ClientValidationFunction
=
"ValidateCountry"
Display
=
"Dynamic"
>
</
asp:CustomValidator
>
</
td
>
</
tr
>
</
table
>
</
td
>
</
tr
>
<
tr
id
=
"trSupplier"
runat
=
"server"
>
<
td
align
=
"right"
valign
=
"top"
style
=
"width: 168px"
>
<
asp:Label
ID
=
"lblSupplier"
runat
=
"server"
></
asp:Label
>
</
td
>
<
td
>
<
table
width
=
"100%"
cellpadding
=
"0"
cellspacing
=
"0"
>
<
tr
>
<
td
>
<
telerik:radcombobox
runat
=
"server"
id
=
"rcbSuppliers"
autopostback
=
"true"
width
=
"195px"
tabindex
=
"5"
onselectedindexchanged
=
"rcbSuppliers_SelectedIndexChanged"
causesvalidation
=
"false"
allowcustomtext
=
"true"
filter
=
"Contains"
OnClientSelectedIndexChanged
=
"SupplierSelectedIndexChanged"
>
</
telerik:radcombobox
>
<
asp:CustomValidator
ID
=
"customValidatorSupplierName2"
runat
=
"server"
ClientValidationFunction
=
"ValidateSupplier"
Display
=
"Dynamic"
>
<
img
alt
=
""
src
=
"/Include/Img/icon_error.gif"
/>
</
asp:CustomValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
>
<
asp:CustomValidator
ID
=
"customValidatorSupplierName"
runat
=
"server"
ClientValidationFunction
=
"ValidateSupplier"
Display
=
"Dynamic"
>
</
asp:CustomValidator
>
</
td
>
</
tr
>
</
table
>
</
td
>
</
tr
>
<
tr
id
=
"trBrand"
runat
=
"server"
>
<
td
align
=
"right"
valign
=
"top"
style
=
"width: 168px"
>
<
asp:Label
ID
=
"lblBrand"
runat
=
"server"
></
asp:Label
>
</
td
>
<
td
>
<
table
width
=
"100%"
cellpadding
=
"0"
cellspacing
=
"0"
>
<
tr
>
<
td
>
<
telerik:radcombobox
runat
=
"server"
id
=
"rcbBrands"
autopostback
=
"true"
width
=
"195px"
tabindex
=
"6"
onselectedindexchanged
=
"rcbBrands_SelectedIndexChanged"
causesvalidation
=
"false"
allowcustomtext
=
"true"
filter
=
"Contains"
>
</
telerik:radcombobox
>
<
asp:CustomValidator
ID
=
"customValidatorBrandIcon"
runat
=
"server"
ClientValidationFunction
=
"ValidateBrand"
Display
=
"Dynamic"
>
<
img
alt
=
""
src
=
"/Include/Img/icon_error.gif"
/>
</
asp:CustomValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
>
<
asp:CustomValidator
ID
=
"customValidatorBrand"
runat
=
"server"
ClientValidationFunction
=
"ValidateBrand"
Display
=
"Dynamic"
>
</
asp:CustomValidator
>
</
td
>
</
tr
>
</
table
>
</
td
>
</
tr
>
<
tr
id
=
"trSubbrand"
runat
=
"server"
>
<
td
align
=
"right"
valign
=
"top"
style
=
"width: 168px"
>
<
asp:Label
ID
=
"lblSubBrand"
runat
=
"server"
></
asp:Label
>
</
td
>
<
td
>
<
table
width
=
"100%"
cellpadding
=
"0"
cellspacing
=
"0"
>
<
tr
>
<
td
>
<
telerik:radcombobox
runat
=
"server"
id
=
"rcbSubBrands"
autopostback
=
"true"
width
=
"195px"
tabindex
=
"7"
onselectedindexchanged
=
"rcbSubBrands_SelectedIndexChanged"
causesvalidation
=
"false"
allowcustomtext
=
"true"
filter
=
"Contains"
>
</
telerik:radcombobox
>
<
asp:CustomValidator
ID
=
"customValidatorSubBrand"
runat
=
"server"
ClientValidationFunction
=
"ValidateSubBrand"
Display
=
"None"
>
</
asp:CustomValidator
>
</
td
>
</
tr
>
</
table
>
</
td
>
</
tr
>
</
table
>
</
asp:Panel
>
When any item selected from suppliers, The page flickers like Postback, I know it is postabck but want the Ajax to do any help here..!