Setting A ID Field That Holds Numbers And Text

I am totally confused, i have set my data type in the ID field for my database as VarChar (SQL Server Database)

 I am confused a have it declared in ASP.NET 2 as a string but it doesnt recognise it when i try and insert the data into a database, what am I doing wrong?

 Thanks

 1 <%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Untitled Page" %>
2
3 <script runat="server">
4
5 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
6
7 End Sub
8
9 </script>
10
11 <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
12 <span style="font-size: 11pt" id="SPAN1">
13 To initiate a new project, Enter details and
14 select <strong>Insert</strong>.
15 <br />
16 <br />
17 <asp:DetailsView ID="DetailsView1" runat="server" AllowPaging="True" AutoGenerateRows="False" DataSourceID="SqlDataSource1" Height="50px" Width="324px" DefaultMode="Insert">
18 <Fields>
19 <asp:BoundField DataField="ProjectID" HeaderText="ProjectID" SortExpression="ProjectID" />
20 <asp:BoundField DataField="ProjectName" HeaderText="Project Name" SortExpression="ProjectName" />
21 <asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" />
22 <asp:TemplateField HeaderText="Project Manager" SortExpression="ProjectManagersID">
23 <EditItemTemplate>
24 <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("ProjectManagersID") %>'></asp:TextBox>
25 </EditItemTemplate>
26 <InsertItemTemplate>
27 <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="ProjMan" DataTextField="PMName"
28 DataValueField="ProjectManagersID" SelectedValue='<%# Bind("ProjectManagersID") %>'>
29 </asp:DropDownList><asp:SqlDataSource ID="ProjMan" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
30 DeleteCommand="DELETE FROM [ProjectManagers] WHERE [ProjectManagersID] = @ProjectManagersID"
31 InsertCommand="INSERT INTO [ProjectManagers] ([PMName]) VALUES (@PMName)" SelectCommand="SELECT [ProjectManagersID], [PMName] FROM [ProjectManagers]"
32 UpdateCommand="UPDATE [ProjectManagers] SET [PMName] = @PMName WHERE [ProjectManagersID] = @ProjectManagersID">
33 <DeleteParameters>
34 <asp:Parameter Name="ProjectManagersID" Type="Int32" />
35 </DeleteParameters>
36 <UpdateParameters>
37 <asp:Parameter Name="PMName" Type="String" />
38 <asp:Parameter Name="ProjectManagersID" Type="Int32" />
39 </UpdateParameters>
40 <InsertParameters>
41 <asp:Parameter Name="PMName" Type="String" />
42 </InsertParameters>
43 </asp:SqlDataSource>
44 </InsertItemTemplate>
45 <ItemTemplate>
46 <asp:Label ID="Label1" runat="server" Text='<%# Bind("ProjectManagersID") %>'></asp:Label>
47 </ItemTemplate>
48 </asp:TemplateField>
49 <asp:TemplateField HeaderText="Project Type" SortExpression="ProjectTypeID">
50 <EditItemTemplate>
51 <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("ProjectTypeID") %>'></asp:TextBox>
52 </EditItemTemplate>
53 <InsertItemTemplate>
54 <asp:DropDownList ID="DropDownList2" runat="server" DataSourceID="ProjType" DataTextField="ProjectType"
55 DataValueField="ProjectTypeID" SelectedValue='<%# Bind("ProjectTypeID") %>'>
56 </asp:DropDownList><asp:SqlDataSource ID="ProjType" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
57 DeleteCommand="DELETE FROM [ProjectType] WHERE [ProjectTypeID] = @ProjectTypeID"
58 InsertCommand="INSERT INTO [ProjectType] ([ProjectTypeID], [ProjectType]) VALUES (@ProjectTypeID, @ProjectType)"
59 SelectCommand="SELECT * FROM [ProjectType]" UpdateCommand="UPDATE [ProjectType] SET [ProjectType] = @ProjectType WHERE [ProjectTypeID] = @ProjectTypeID">
60 <DeleteParameters>
61 <asp:Parameter Name="ProjectTypeID" Type="Int32" />
62 </DeleteParameters>
63 <UpdateParameters>
64 <asp:Parameter Name="ProjectType" Type="String" />
65 <asp:Parameter Name="ProjectTypeID" Type="Int32" />
66 </UpdateParameters>
67 <InsertParameters>
68 <asp:Parameter Name="ProjectTypeID" Type="Int32" />
69 <asp:Parameter Name="ProjectType" Type="String" />
70 </InsertParameters>
71 </asp:SqlDataSource>
72 </InsertItemTemplate>
73 <ItemTemplate>
74 <asp:Label ID="Label2" runat="server" Text='<%# Bind("ProjectTypeID") %>'></asp:Label>
75 </ItemTemplate>
76 </asp:TemplateField>
77 <asp:BoundField DataField="StatusID" HeaderText="Status" insertvisible=False readonly=True SortExpression="StatusID" />
78 <asp:CommandField ShowInsertButton="True" ButtonType=Button />
79 </Fields>
80 </asp:DetailsView>
81 <br />
82 <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
83 DeleteCommand="DELETE FROM [Project] WHERE [ProjectID] = @ProjectID" InsertCommand="INSERT INTO [Project] ([ProjectName], [Description], [ProjectManagersID], [ProjectTypeID], [StatusID]) VALUES (@ProjectName, @Description, @ProjectManagersID, @ProjectTypeID, @StatusID)"
84 SelectCommand="SELECT [ProjectID], [ProjectName], [Description], [ProjectManagersID], [ProjectTypeID], [StatusID] FROM [Project]"
85 UpdateCommand="UPDATE [Project] SET [ProjectName] = @ProjectName, [Description] = @Description, [ProjectManagersID] = @ProjectManagersID, [ProjectTypeID] = @ProjectTypeID, [StatusID] = @StatusID WHERE [ProjectID] = @ProjectID">
86 <DeleteParameters>
87 <asp:Parameter Name="ProjectID" Type="Int32" />
88 </DeleteParameters>
89 <UpdateParameters>
90 <asp:Parameter Name="ProjectName" Type="String" />
91 <asp:Parameter Name="Description" Type="String" />
92 <asp:Parameter Name="ProjectManagersID" Type="Int32" />
93 <asp:Parameter Name="ProjectTypeID" Type="Int32" />
94 <asp:Parameter Name="StatusID" Type="Int32" />
95 <asp:Parameter Name="ProjectID" Type="Int32" />
96 </UpdateParameters>
97 <InsertParameters>
98 <asp:Parameter Name="ProjectID" Type="String" />
99 <asp:Parameter Name="ProjectName" Type="String" />
100 <asp:Parameter Name="Description" Type="String" />
101 <asp:Parameter Name="ProjectManagersID" Type="Int32" />
102 <asp:Parameter Name="ProjectTypeID" Type="Int32" />
103 <asp:Parameter Name="StatusID" Type="Int32" DefaultValue=1 />
104 </InsertParameters>
105 </asp:SqlDataSource>
106 </span>
107 </asp:Content>
108
109