murugangs

How to override or customize the Sharepoint SaveButton?

The SDK documentation explains here [1] how to override the ListFiledIterator to a Document Library by changing the template. I need to change the Sharepoint SaveButton so that I can do some additional task after or before saving.

These are the steps I followed to do this:

1. Create a custom type inheriting from Sharepoint SaveButton.
2. Override the protected SaveItem method, and do the custom code which you want.
3. Create a Control Template, which overrides the default Sharepoint default implementation (here was I spent lots of my time to figure it out to achieve this)

The key is you have to replace the default declaration with your custom assembly and type, which you created in step a.

Change the control template of your custom control template from this

      <Template_Buttons>

            <SharePoint:CreatedModifiedInfo runat="server"/>

      </Template_Buttons>

      <Template_RightButtons>

            < SharePoint:SaveButton runat="server"/>

            <SharePoint:GoBackButton runat="server"/>

      </Template_RightButtons>

</wssuc:ToolBar>

to this:

<wssuc:ToolBar CssClass="ms-formtoolbar" id="toolBarTbl"    RightButtonSeparator="&nbsp;" runat="server">

      <Template_Buttons>

            <SharePoint:CreatedModifiedInfo runat="server"/>

      </Template_Buttons>

      <Template_RightButtons>

            <CustomOverrideControls:CustomSaveButton TemplateName="SaveButtonNew" runat="server"/>

            <SharePoint:GoBackButton runat="server"/>

      </Template_RightButtons>

</wssuc:ToolBar>

 
Define the SaveButtonNew template as follows:

 <SharePoint:RenderingTemplate ID="SaveButtonNew" runat="server">

      <Template>

            <TABLE cellpadding=0 cellspacing=0 width=100%>

            <TR><TD align="<SharePoint:EncodedLiteral runat='server'                            text='<%$Resources:wss,multipages_direction_right_align_value%>'                    EncodeMethod='HtmlEncode'/>"  width=100% nowrap>

            <asp:Button UseSubmitBehavior="false" ID=diidIOSaveItem                             CommandName="SaveItem" Text="<%$Resources:wss,tb_save%>"

            class="ms-ButtonHeightWidth" accesskey="<%$Resources:wss,tb_save_AK%>"

            target="_self" runat="server"/>

            </TD> </TR> </TABLE>

      </Template>

</SharePoint:RenderingTemplate>

 
This is exact copy of the exisiting SaveButton RenderingTemplate declaration except the ID, which currently tells as our custom control template name.

 
I also attached a sample project which implements the custom type and the custom control template file (CustomControl.ascx, the name really does not matter) which needs to be placed in the "12 hive" ControlTemplates folder.

 
Cheers,

Murugan G.