这是我的下拉菜单 CS 文件:
protected void BindDropDownList()
{
DataTable dt = new DataTable();
string connString = System.Configuration.ConfigurationManager.AppSettings["EyeProject"];
SqlConnection conn = new SqlConnection(connString);
try
{
conn.Open();
string sqlStatement = "SELECT FirstName FROM tbl_UserDetails";
SqlCommand sqlCmd = new SqlCommand(sqlStatement, conn);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
DropDownList1.DataSource =dt;
DropDownList1.DataTextField = "FirstName"; // the items to be displayed in the list items
DropDownList1.DataBind();
}
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "No Data Found To display in the DropDown List";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
conn.Close();
}
}
By using this one iam getting values of table Firstname values now i want to add one more item Called ALLrecords.
How can i add it.
this is my Aspx file
<div class="label">
Select Name:
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
</div>
最佳答案
试试这个
DropDownList1.Items.Add(new ListItem("All Record"));
如果你想添加有值(value)的项目
DropDownList1.Items.Add(new ListItem("All Record","0"));
//or if you want to add at particular index then
DropDownList1.Items.Insert(0,new ListItem("All Record"));// 0 is index of item
希望对您有所帮助。
关于c# - 如何在cs文件的下拉列表中添加项目,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11734683/