ControlParameter&QUOT

ControlParameter&QUOT

本文介绍了更改属性"默认值" ControlParameter"在asp.net&QUOT的;使用JavaScript控制的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我已经有关于如何做到这一点的想法,但我意识到,控制ControlParameter没有一个id属性(这是需要的JS)。有没有办法使用JavaScript来改变默认值属性,而不需要使用ID属性的不同的方式?

下面是JavaScript和asp.net code,我一直努力着:

JavaScript的:

 函数ChangePropertyValue(propertyName的,newpropertyValue){
        VAR ControlParameter =的document.getElementById(propertyName的)
        ControlParameter.DefaultValue = newpropertyValue
    }

asp.net:

 < ASP:按钮的ID =为btnTest=服务器文本=试一试的OnClick =ChangePropertyValue(??,17)/>        < ASP:SqlDataSource的ID =SqlDataSource1=服务器
        的ConnectionString =下;%$的ConnectionStrings:DatabaseConnectionString1%>中
        的SelectCommand =SELECT [ID],[ContentTitle],[内容] FROM [表1] WHERE([ID] = @Id)>
        < SelectParameters>
            < ASP:ControlParameter控件ID =ListView1的默认值=16NAME =ID
                属性名=的SelectedValueTYPE =的Int32/>
        < / SelectParameters>
    < / ASP:SqlDataSource的>


解决方案

您无法访问 ControlParameter 客户端。 ControlParameters 用于控件属性服务器端的值绑定,他们不会呈现到客户端。你可以,但是,设置的默认值 ControlParameter 编程在code的后面。

  SqlDataSource1.SelectParameters [身份证] =默认值值。

I already have an idea on how to do this, but I realized that the control "ControlParameter" did not have an "Id" property (which is needed for the JS). Is there a different way to use JavaScript to change the "DefaultValue" property without the need of using the "Id" property?

Here is the JavaScript and asp.net code that I have been working with:

JavaScript:

        function ChangePropertyValue(propertyName, newpropertyValue) {
        var ControlParameter = document.getElementById(propertyName)
        ControlParameter.DefaultValue = newpropertyValue
    }

asp.net:

        <asp:Button ID="btntest" runat="server" Text="try" OnClick="ChangePropertyValue(??, 17)"/>

        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
        ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString1 %>"
        SelectCommand="SELECT [Id], [ContentTitle], [Content] FROM [Table1] WHERE ([Id] = @Id)">
        <SelectParameters>
            <asp:ControlParameter ControlID="ListView1" DefaultValue="16" Name="Id"
                PropertyName="SelectedValue" Type="Int32"/>
        </SelectParameters>
    </asp:SqlDataSource>
解决方案

You can't access a ControlParameter client side. ControlParameters are used to bind the value of a Control property server side, they are not rendered to the client. You can, however, set the Default value of the ControlParameter programmatically in your Code Behind.

SqlDataSource1.SelectParameters["id"].DefaultValue = "value";

这篇关于更改属性&QUOT;默认值&QUOT; ControlParameter&QUOT;在asp.net&QUOT的;使用JavaScript控制的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-22 08:40