Web这很好，但我不知道如何将子级别链接到第二个下拉列表。这是否可能使用数据绑定？ 我希望第二个下拉列表的XmlDataSource需要在第一个下拉列表的SelectedItemChanged上更改其XPath WebJul 16, 2014 · According to your description, if you want to set two fields to the DropDownList control, you need to combine them into one field. There are two ways to combine them. First, you can combine them in the sql query as below: select LanguageID + Language as Language from table

c# - Dropdownlist Default value - STACKOOM

WebMar 24, 2014 · protected void Page_Load (object sender, EventArgs e) { ddlproductName.SelectedIndex = 0; if (!IsPostBack) { tbDate.Text = DateTime.Today.ToShortDateString (); string cs = ConfigurationManager.ConnectionStrings ["DBCS"].ConnectionString; using (SqlConnection con = new SqlConnection (cs)) { … WebMar 22, 2012 · The DataTextField attribute is set with the following code: ddlItems.DataTextField = "ItemName"; I want to display two data properties as the … earth 398

Dropdownlist - Set datatextfield equal to multiple columns

WebC# 在选项卡控件中的Gridview页脚中绑定下拉列表,c#,asp.net,ajax,tabs,C#,Asp.net,Ajax,Tabs,我正在使用ASP.NET和AJAX的实体框架和选项卡控件 我在gridview中有一个下拉列表控件，它位于选项卡控件中。我无法绑定下拉列表控件。 WebFeb 1, 2016 · DropDownListSelectEmployee.Items.Add ("nWorks User"); while (rdr.Read ()) { user = rdr.GetString ("username"); DropDownListSelectEmployee.Items.Add (user); } You need to add the first item outside of the loop, then by default you will have that first item selected. Share Improve this answer Follow answered Feb 1, 2016 at 11:21 Takarii WebSep 6, 2013 · DropDownList is taking data from a sqlDataSourse called SqlDataSource2 . I need to update the dropDownList on the onTextChange event of a textBox. So I wrote this. protected void txtDate_TextChanged (object sender, EventArgs e) { SqlDataSource2.SelectCommand = "NEW SQL COMMAND"; } But this does not update … earth 39811