Asp.net使用c＃Listbox [英] Asp.net using c# Listbox

问题描述

嘿伙计们，我试图从列表框中获取项目的ID并将其添加到数据库中。有谁知道我怎么能去做，我不想要文本。我已经尝试过selectedItem和selectedValue，但它们没有用。我从数据库中获取列表框项目

Hey guys, im trying to get the ID of an item from the listbox and add it on to the database. does anyone know how can i go about it, i dont want the text. Ive tried selectedItem, and selectedValue but they not working. I get my listbox items from the database

推荐答案

您好，



首先确保您的绑定列表以这种方式框。

Hi,

First make sure your are binding list box in this way.

DataTable dtName = new DataTable();

    dtName.Columns.Add(new DataColumn("DisplayMember"));
    dtName.Columns.Add(new DataColumn("ValueMember"));

    dtName.Rows.Add("Suits", "0");
    dtName.Rows.Add("Harvey Spector", "1");
    dtName.Rows.Add("Jessica Pearson", "2");
    dtName.Rows.Add("Mike Ross", "3");
    dtName.Rows.Add("Donna Paulson", "4");
    dtName.Rows.Add("Rachel", "5");

    Listbox1.DataSource = dtName;
    Listbox1.DataTextField = "DisplayMember";//Name of Column
    Listbox1.DataValueField = "ValueMember";//Name of Column
    Listbox1.DataBind();

和页面加载你没有重新绑定列表框控件，即将数据绑定代码放在if（！ispostback）块中。

，只需致电

and on page load you are not rebinding the listbox control i.e place databinding code in if(!ispostback) block.
and simply call

ListItem item = Listbox1.SelectedItem;
string selectedText = item.Text;
string selectedValue = item.Value;

希望这会有所帮助！

Hope this helps!.

只需选择即可价值

Simply You can do to get selected value

foreach (ListItem item in ListBox1.Items)
      {
          if (item.Selected)
          {
              string value = item.Value.ToString();
          }
      }

Asp.Net列表框操作....... Asp.Net ListBox



Patter

Asp.Net listbox operations ....... Asp.Net ListBox

Patter

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