任何人都可以查看我的代码并告诉我这个错误可能源于何处？我需要我的表单来操作dropdownlist1中的empid字段，因为我的存储过程需要int值，但是当我将DataValueField更改为EmpID时，我说dropdownList中的SelectedValue不存在于项列表中。我已经尝试将SelectedValue更改为EmpId，但没有运气。有什么想法吗？
的.aspx
<asp:TemplateField HeaderText="Project Lead">
<EditItemTemplate>
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="Employee"
DataTextField="Project Lead" DataValueField="EmpId"
SelectedValue='<%# Bind("Project Lead") %>'>
</asp:DropDownList>
<asp:SqlDataSource ID="Employee" runat="server"
ConnectionString="<%$ ConnectionStrings:LandscapeServicesConnectionString %>"
SelectCommand="select EmpId, (firstname+' '+lastname) as "Project Lead" from Employees ">
</asp:SqlDataSource>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("ProjectLead") %>'></asp:Label>
</ItemTemplate>
<HeaderStyle ForeColor="Black" Wrap="False" Font-Names="Arial" HorizontalAlign="Center"
BackColor="Silver" Font-Bold="True" Font-Size="11px" />
<ItemStyle Font-Bold="False" Font-Names="Arial" ForeColor="Black" Wrap="False"
HorizontalAlign="Left" Font-Size="9px" />
aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using System.Web.UI.HtmlControls;
using System.Collections;
using System.Configuration;
namespace LandscapeServices
{
public partial class Update : System.Web.UI.Page
{
public string query { get; set; }
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings ["LandscapeServicesConnectionString"].ConnectionString);
DataSet dt = new DataSet();
string[] IApps;
string[] SApps;
ListBox lbImpactedApps;
ListBox lbSupportingApps;
ListBox ListBoxOne;
ListBox ListBoxTwo;
ListBox ListBoxThree;
ListBox ListBoxFour;
TextBox TextBoxOne;
TextBox TextBoxTwo;
DropDownList DropDownListOne;
DropDownList DropDownListTwo;
DropDownList DropDownListThree;
DropDownList DropDownListFour;
DropDownList DropDownListFive;
DropDownList DropDownListSeven;
DropDownList DropDownListEight;
DropDownList DropDownListNine;
TextBox Calendar1;
TextBox Comments;
protected void Page_Load(object sender, EventArgs e)
{
con.Open();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
//GridView1.EditIndex = e.NewEditIndex;
string ImpactedApp = ((System.Web.UI.WebControls.Label)(((System.Web.UI.WebControls.GridView)(sender)).Rows[e.NewEditIndex].FindControl("Label10"))).Text;
IApps = ImpactedApp.Split(',');
string SupportingApp = ((System.Web.UI.WebControls.Label)(((System.Web.UI.WebControls.GridView)(sender)).Rows[e.NewEditIndex].FindControl("Label11"))).Text;
SApps = SupportingApp.Split(',');
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
lbImpactedApps = (ListBox)e.Row.FindControl("ListBox1");
lbSupportingApps = (ListBox)e.Row.FindControl("ListBox2");
foreach (string lst in IApps)
{
lbImpactedApps.Items.Add(lst.ToString());
//lbImpactedApps.Items.FindByText(lst.ToString()).Selected = true;
}
lbImpactedApps.DataBind();
foreach (string lst in SApps)
{
lbSupportingApps.Items.Add(lst.ToString());
//lbSupportingApps.Items.FindByText(lst.ToString()).Selected = true;
}
lbSupportingApps.DataBind();
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
ListBoxOne = row.FindControl("ListBox1") as ListBox;
ListBoxThree = row.FindControl("ListBox3") as ListBox;
if (ListBoxOne != null)
break;
}
}
for (int i = ListBoxThree.Items.Count - 1; i >= 0; i--)
{
if (ListBoxThree.Items[i].Selected == true)
{
ListBoxOne.Items.Add(new ListItem(ListBoxThree.Items[i].Text, ListBoxThree.Items[i].Value + ","));
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
ListBoxOne = row.FindControl("ListBox1") as ListBox;
if (ListBoxOne != null)
break;
}
}
for (int i = ListBoxOne.Items.Count - 1; i >= 0; i--)
{
if (ListBoxOne.Items[i].Selected == true)
{
ListBoxOne.Items.Remove(new ListItem(ListBoxOne.Items[i].Text, ListBoxOne.Items[i].Value));
}
}
}
protected void Button3_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
ListBoxTwo = row.FindControl("ListBox2") as ListBox;
ListBoxFour = row.FindControl("ListBox4") as ListBox;
if (ListBoxTwo != null)
break;
}
}
for (int i = ListBoxFour.Items.Count - 1; i >= 0; i--)
{
if (ListBoxFour.Items[i].Selected == true)
{
ListBoxTwo.Items.Add(new ListItem(ListBoxFour.Items[i].Text, ListBoxFour.Items[i].Value + ","));
}
}
}
protected void Button4_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
ListBoxTwo = row.FindControl("ListBox2") as ListBox;
if (ListBoxTwo != null)
break;
}
}
for (int i = ListBoxTwo.Items.Count - 1; i >= 0; i--)
{
if (ListBoxTwo.Items[i].Selected == true)
{
ListBoxTwo.Items.Remove(new ListItem(ListBoxTwo.Items[i].Text, ListBoxTwo.Items[i].Value));
}
}
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
if (con.ConnectionString == "")
{
con.Close();
con.Dispose();
}
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
ListBoxOne = row.FindControl("ListBox1") as ListBox;
ListBoxTwo = row.FindControl("ListBox2") as ListBox;
TextBoxOne = row.FindControl("txtProjectName") as TextBox;
TextBoxTwo = row.FindControl("txtArtemisNumber") as TextBox;
DropDownListOne = row.FindControl("DropDownList1") as DropDownList;
DropDownListTwo = row.FindControl("DropDownList2") as DropDownList;
DropDownListThree = row.FindControl("DropDownList3") as DropDownList;
DropDownListFour = row.FindControl("DropDownList4") as DropDownList;
DropDownListFive = row.FindControl("DropDownList5") as DropDownList;
DropDownListSeven = row.FindControl("DropDownList7") as DropDownList;
DropDownListEight = row.FindControl("DropDownList8") as DropDownList;
DropDownListNine = row.FindControl("DropDownList9") as DropDownList;
Calendar1 = row.FindControl("ImplementationDate") as TextBox;
Comments = row.FindControl("txtComments") as TextBox;
string ListBox1Values = "";
for (int i = ListBoxOne.Items.Count - 1; i >= 0; i--)
{
ListBox1Values += ListBoxOne.Items[i].Value;
}
if (ListBoxOne.Items.Count == 0)
{
ListBox1Values = "1075";
}
ListBox1Values = ListBox1Values.TrimEnd(',');
string ListBox2Values = "";
for (int i = ListBoxTwo.Items.Count - 1; i >= 0; i--)
{
ListBox2Values += ListBoxTwo.Items[i].Value;
}
if (ListBoxTwo.Items.Count == 0)
{
ListBox2Values = "1075";
}
ListBox2Values = ListBox2Values.TrimEnd(',');
//Execute Stored proc
query = "EXEC USP_UPDATE_PROJECTS '" + TextBoxOne.Text.ToString() + "','" +
TextBoxTwo.Text.ToString() + "','" +
DropDownListOne.SelectedValue.ToString() + "','" +
DropDownListTwo.SelectedValue.ToString() + "','" +
DropDownListThree.SelectedValue.ToString() + "','" +
DropDownListFour.SelectedValue.ToString() + "','" +
DropDownListFive.SelectedValue.ToString() + "','" +
DropDownListEight.SelectedValue.ToString() + "','" +
DropDownListNine.SelectedValue.ToString() + "','" +
ListBox1Values + "','" +
ListBox2Values + "','" +
Calendar1.Text + "','" +
DropDownListSeven.SelectedValue.ToString() + "','" +
Comments.Text.ToString() + "','" + "'";
//con.Open();
SqlCommand cmd = new SqlCommand(query, con);
cmd.ExecuteNonQuery();
}
}
}
}
}