如何编程设置DROPDOWNLIST中的SelectedValue时，它必然的XmlDataSource [英] How to programatically set SelectedValue of Dropdownlist when it is bound to XmlDataSource

问题描述

我用的XmlDataSource 为数据源为的DropDownList 。

现在我想将的SelectedValue 降下来当页面加载最初。我曾尝试 OnDataBound下降的情况下下跌中，我可以看到总的项目。但设置的SelectedValue 没有工作。在 OnDataBinding 事件，我甚至不能看到总项目可能因为名单尚未绑定？

Now I want to set the SelectedValue of the drop down when the page initially loads. I have tried the OnDataBound event of the drop down in which I could see the total items. But setting the SelectedValue didn't work. InOnDataBinding event, I couldn't even see the total items probably because the list isn't bound yet?

如何设置选定的索引基础上的价值？

How can I set the selected index based on a value?

推荐答案

这似乎为我工作。

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            DropDownList1.DataBind(); // get the data into the list you can set it
            DropDownList1.Items.FindByValue("SOMECREDITPROBLEMS").Selected = true;
        }
    }

这篇关于如何编程设置DROPDOWNLIST中的SelectedValue时，它必然的XmlDataSource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IT屋！