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Editorial Team
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Asked: 2026-05-14T21:19:05+00:00

I’m using ASP Master pages, and I would like to add an onkeypress event

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I’m using ASP Master pages, and I would like to add an “onkeypress” event handler to the <body> in the Master page, but only for a single page.

How do I do this?

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1 Answer

  1. Editorial Team

    I would add a public property to the MasterPage, something like BodyOnKeyPress. Then set the OnKeyPress attribute of the body tag in the MasterPage’s PreRender event. Client pages just need to set this property before the Master’s PreRender event fires.

    This is air code, as I don’t have a project to test on. But it should be something like this:

    MasterPage Markup:

    <%-- Mark the body tag with runat="server", and give it an ID to reference in code. --%>
<body id="mainBody" runat="server">
    ...
</body>

    MasterPage CodeBehind:

    protected void Page_PreRender(...) {
    mainBody.Attributes["onkeypress"] = this.BodyOnKeyPress;
}

public string BodyOnKeyPress {
    get {
        return ViewState["BodyOnKeyPress"];
    }
    set {
        ViewState["BodyOnKeyPress"] = value;
    }
}
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