这是一个注册表单，用于接受用户详细信息并存储在存储过程中。
我能够获取所有字段并将结果存储在SQL中，但我的下拉列表存在问题。
请建议我一个解决方案
ASPX加价：
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplicationSAFinal._Default" %>
<script runat="server">
</script>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2 class="text-center">
& nbsp;
System Access Form
</h2>
<div>
<table>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Label ID="Label1" runat="server" Text="Last Name:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textnamel" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator7" runat="server"
ControlToValidate="textnamel"
ErrorMessage="Last Name is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px">
<asp:Label ID="Label4" runat="server" Text="First Name:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textnamef" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator6" runat="server"
ControlToValidate="textnamef"
ErrorMessage=" First Name is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px">
<asp:Label ID="Label10" runat="server" Font-Bold="True" Text="System Name:"></asp:Label>
<asp:DropDownList ID="DropDownList1" runat="server" Height="22px" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" Width="128px">
<asp:ListItem Value="0">Select</asp:ListItem> //dropdown list
<asp:ListItem Value="1">Infi</asp:ListItem>
<asp:ListItem Value="2">comp</asp:ListItem>
<asp:ListItem Value="3">Quest</asp:ListItem>
<asp:ListItem Value="4">look</asp:ListItem>
<asp:ListItem Value="5">Med</asp:ListItem>
<asp:ListItem Value="6">MAS</asp:ListItem>
<asp:ListItem Value="7">Silo</asp:ListItem>
<asp:ListItem Value="8">Sym</asp:ListItem>
<asp:ListItem Value="9">ER</asp:ListItem>
<asp:ListItem Value="10">Crane</asp:ListItem>
<asp:ListItem Value="11">StaRpts</asp:ListItem>
<asp:ListItem Value="12">PD</asp:ListItem>
<asp:ListItem Value="13">System</asp:ListItem>
<asp:ListItem Value="14">Mobi</asp:ListItem>
<asp:ListItem Value="15">Sov</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator id="RequiredFieldValidator9" runat="server"
ControlToValidate="DropDownList1"
ErrorMessage="Please select a system name."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px">
<asp:Label ID="Label2" runat="server" Text="Department:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textdept" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator8" runat="server"
ControlToValidate="textdept"
ErrorMessage="Department is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px">
<asp:Label ID="Label5" runat="server" Text="Phone:" Font-Bold="True">
</asp:Label>
<asp:TextBox ID="textphone" runat="server" ></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator3" runat="server"
ControlToValidate="textphone"
ErrorMessage="Phone is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="textphone"
ErrorMessage="Invalid number" ValidationExpression="^[01]?[- .]?(\([2-9]\d{2}\)|[2-9]\d{2})[- .]?\d{3}[- .]?\d{4}$" Font-Bold="True"></asp:RegularExpressionValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px">
<asp:Label ID="Label3" runat="server" Text="Location:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textloc" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator2" runat="server"
ControlToValidate="textloc"
ErrorMessage="Location is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Label ID="Label6" runat="server" Text="Email:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textemail" runat="server" ></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server"
ControlToValidate="textemail"
ErrorMessage="Email is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="textemail"
ErrorMessage="Invalid Email Id" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" Font-Bold="True"></asp:RegularExpressionValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Label ID="Label7" runat="server" Text="Security Level/Group:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textgroup" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator4" runat="server"
ControlToValidate="textgroup"
ErrorMessage="Security Group is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Label ID="Label8" runat="server" Text="Login ID:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textid" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator id="RequiredFieldValidator5" runat="server"
ControlToValidate="textid"
ErrorMessage="Login ID is a required field."
ForeColor="Red" Font-Bold="True"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Label ID="Label9" runat="server" Text="Comments:" Font-Bold="True"></asp:Label>
<asp:TextBox ID="textcom" runat="server" Height="22px" Width="128px"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 597px; height: 41px;">
<asp:Button ID="submit" runat="server" Text="Add" OnClick="submit_Click" Font-Bold="True" />
<asp:Button ID="cancel" runat="server" Font-Bold="True" Text="Cancel" OnClick="Page_Load"/>
<asp:Label ID="labelerror" runat="server" ForeColor="Green"> </asp:Label>
</td>
</tr>
</table>
</div>
</asp:Content>
C＃代码：
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplicationSAFinal
{
public partial class _Default : System.Web.UI.Page
{
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["conn"].ToString());
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
binddata();
}
}
protected void binddata()
{
DropDownList ddlist1 = new DropDownList();
ListItem item1 = new ListItem("Select Value","0");
ListItem item2 = new ListItem("Infi","1");
ListItem item3 = new ListItem("comp","2");
ListItem item4 = new ListItem("Quest","3");
ListItem item5 = new ListItem("look","4");
ListItem item6 = new ListItem("Med","5");
ListItem item7 = new ListItem("MAS","6");
ListItem item8 = new ListItem("Silo","7");
ListItem item9 = new ListItem("Sym","8");
ListItem item10 = new ListItem("ER", "9");
ListItem item11 = new ListItem("Crane", "10");
ListItem item12 = new ListItem("StaRpts", "11");
ListItem item13 = new ListItem("PD", "12");
ListItem item14 = new ListItem("System", "13");
ListItem item15 = new ListItem("Mobi", "14");
ListItem item16 = new ListItem("Sov", "15");
ddlist1.Items.Add(item1);
ddlist1.Items.Add(item2);
ddlist1.Items.Add(item3);
ddlist1.Items.Add(item4);
ddlist1.Items.Add(item5);
ddlist1.Items.Add(item6);
ddlist1.Items.Add(item7);
ddlist1.Items.Add(item8);
ddlist1.Items.Add(item9);
ddlist1.Items.Add(item11);
ddlist1.Items.Add(item12);
ddlist1.Items.Add(item13);
ddlist1.Items.Add(item14);
ddlist1.Items.Add(item15);
ddlist1.Items.Add(item16);
}
protected void submit_Click(object sender, EventArgs e)
{
try
{
conn.Open();
string sql = "final_form_insert"; // stored procedure name
SqlParameter[] par = new SqlParameter[10]; /array
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.CommandType = CommandType.StoredProcedure;
par[0] = new SqlParameter("@lname", textnamel.Text);
par[1] = new SqlParameter("@fname", textnamef.Text);
par[2] = new SqlParameter("@dept", textdept.Text);
par[3] = new SqlParameter("@phone", textphone.Text);
par[4] = new SqlParameter("@location", textloc.Text);
par[5] = new SqlParameter("@email", textemail.Text);
par[6] = new SqlParameter("@slg", textgroup.Text);
par[7] = new SqlParameter("@id", textid.Text);
par[8] = new SqlParameter("@comments", textcom.Text);
par[9] = new SqlParameter("@systemname", DropDownList1.Text); // Should Text be used as the extension for a dropdown list
foreach (SqlParameter a in par) //adding all the parameters
{
cmd.Parameters.Add(a);
}
string UserId = Convert.ToString(cmd.ExecuteNonQuery());
if (UserId.Length > 0)
{
labelerror.Text = "Records Updated...!";
textcom.Text = string.Empty;
textid.Text = string.Empty;
textgroup.Text = string.Empty;
textemail.Text = string.Empty;
textloc.Text = string.Empty;
textphone.Text = string.Empty;
textdept.Text = string.Empty;
textnamef.Text = string.Empty;
textnamel.Text = string.Empty;
DropDownList1.Text = string.Empty; // please tell me the .extension for a drop down list
}
else
{
}
}
catch (Exception ex)
{
labelerror.Text = ex.Message;
}
finally
{
conn.Close();
}
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
//left empty
}
}
}
答案 0 :(得分：0)
您想使用DropDownList1.SelectedValue
public string DropDownListValue
{
get { return DropDownList1.SelectedValue; }
set
{
if (DropDownList1.Items.FindByValue(value) != null)
DropDownList1.SelectedValue = value;
}
}
...
par[9] = new SqlParameter("@systemname", DropDownListValue);
...
...
DropDownListValue = string.Empty;
...