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我正在开发一个asp.net页面,其中两个DropDown列表填充来自数据库中相同表格的值,其中用户需要选择帐户名称和我希望第二个DropDown列表根据First下拉列表选择自动填充它自己的值(Acount Code),共享相同的帐户名称。下面是我的示例代码...如何基于asp.net中的选定文本框自动筛选DropDown列表值
<span class="label">
<asp:Label ID="Label2" runat="server" Text="Account Name"</asp:Label>
</span>
<asp:DropDownList ID="name" runat="server"></asp:DropDownList><br />
<span class="label">
<asp:Label ID="Label3" runat="server" Text="Account Code"></asp:Label>
</span>
<asp:DropDownList ID="code" runat="server"></asp:DropDownList>
和我的C#代码如下..
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string CS = ConfigurationManager.ConnectionStrings["connection"].ConnectionString;
using (SqlConnection conn = new SqlConnection(CS))
{
SqlCommand comm = new SqlCommand("SELECT AccountName, AccountCode FROM Account", conn);
conn.Open();
name.DataSource = comm.ExecuteReader();
name.DataTextField = "AccountName";
name.DataValueField = "AccountName";
name.DataBind();
conn.Close();
if(name.Text != null)
{
conn.Open();
SqlCommand com = new SqlCommand("SELECT AccountCode FROM Account WHERE AccountName= '" + name.Text +"'", conn);
code.DataSource = com.ExecuteReader();
code.DataTextField = "AccountCode ";
code.DataValueField = "AccountCode ";
code.DataBind();
}
}
}
}
就我而言,如果我更改帐户名称的价值观,帐户代码不会自动改变。我怎么能做到这一点..?谢谢