如何显示从下拉列表中选择的值asp.net [英] how to display selected values from dropdown list asp.net

问题描述

如何在asp.net中的文本框中显示下拉列表中的选定值.

how to display selected values from dropdown list in textbox in asp.net

推荐答案

这是基础知识之一.如果您知道DropDownList，则必须知道该怎么做.我想您是asp.net的新手，可以为您提供答案.

This is one of the basics. If you know DropDownList you must know how to do it. I guess you are new to asp.net serving you the answer.

TextBox1.Text =  Convert.Tostring(DropdownList1.SelectedItem.Value);

TextBox1.Text =  Convert.Tostring(DropdownList1.SelectedItem.Text);

或

or

TextBox1.Text =  Convert.Tostring(DropdownList1.SelectedValue.Text);
TextBox1.Text =  Convert.Tostring(DropdownList1.SelectedValue.VAlue);

txtbox.Text = ddl.SelectedItem.Value.ToString();

:)

尝试如下所示

在您的aspx页面中

Try like below

In your aspx page

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"

        onselectedindexchanged="DropDownList1_SelectedIndexChanged">
        <asp:ListItem>1</asp:ListItem>
        <asp:ListItem>2</asp:ListItem>
        <asp:ListItem>3</asp:ListItem>
        <asp:ListItem>4</asp:ListItem>
</asp:DropDownList>
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

在您的aspx.cs页面中

in your aspx.cs page

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        TextBox1.Text = DropDownList1.SelectedItem.Value;
    }

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