如何从code-背后显示之前选择在弹出ppopulated DropDownList的选项$ P $ [英] How to select a prepopulated dropdownlist option in a popup before showing from code-behind

问题描述

这行选定的索引设置为正确的号码：

This line sets the selected index to the correct number:

    ddlCliNewMsg.SelectedIndex = ddlCliNewMsg.Items.IndexOf(ddlCliNewMsg.Items.FindByValue(dr["ClientText"].ToString()));

但是，当弹出的负载，0指数被选中。

But when the popup loads, the 0 index is selected.

推荐答案

修改

    if (dr["ClientText"].ToString().Length > 0)
    {
    ddlCliNewMsg.SelectedValue = dr["ClientText"].ToString();
    }

要

    if (dr["ClientText"].ToString().Length > 0)
    {
    ddlCliNewMsg.ClearSelection(); //making sure the previous selection has been cleared
    ddlCliNewMsg.Items.FindByValue(dr["ClientText"].ToString()).Selected = true;
    }

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