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| BOOK: Beginning ASP.NET Databases Also see the forum ASP Databases for more general discussions of ASP database issues not directly related to these books. |
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July 21st, 2003, 03:37 PM
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Insert Problem
I'm atemping to create a page that will insert new data into my database, the page runs and executes everything but the actual database is not updated, is there another line of code i need in order to do this, thanks
<%@ Page Language="c#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>
<script runat="server">
OleDbConnection objConnection;
private void Page_Load(object sender, System.EventArgs e)
{
objConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; data source=AAC.mdb");
}
private void btnInsert_Click(object sender, System.EventArgs e)
{
if (Page.IsValid)
{
String strSQL = "INSERT INTO Hardware (Type, Location, Manufacturer, ModelNumber, SerialNumber, Other) VALUES (?, ?, ?, ?, ?, ?)";
OleDbCommand dbComm = new OleDbCommand(strSQL, objConnection);
dbComm.Parameters.Add("Type", OleDbType.VarChar, 32, "Type");
dbComm.Parameters.Add("Location", OleDbType.VarChar, 32, "Location");
dbComm.Parameters.Add("Manufacturer", OleDbType.VarChar, 32, "Manufacturer");
dbComm.Parameters.Add("ModelNumber", OleDbType.VarChar, 32, "ModelNumber");
dbComm.Parameters.Add("SerialNumber", OleDbType.VarChar, 32, "SerialNumber");
dbComm.Parameters.Add("Other", OleDbType.VarChar, 32, "Other");
dbComm.Parameters["Type"].Value = txtType.Text;
dbComm.Parameters["Location"].Value = txtLocation.Text;
dbComm.Parameters["Manufacturer"].Value = txtManufacturer.Text;
dbComm.Parameters["ModelNumber"].Value = txtModelNumber.Text;
dbComm.Parameters["SerialNumber"].Value = txtSerialNumber.Text;
dbComm.Parameters["Other"].Value = txtOther.Text;
try
{
objConnection.Open();
dbComm.ExecuteNonQuery();
}
catch (Exception ex)
{
Response.Write(ex.Message);
Response.End();
}
finally
{
if (objConnection.State == ConnectionState.Open);
objConnection.Close();
}
Response.Write("A new record has been added");
Response.End();
}
}
</script>
<html>
<head>
<title>Adding a New Record</title>
</head>
<body>
<form id="Form1" method="post" runat="server">
<table id="Table1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" cellspacing="0" cellpadding="0" width="300" border="0">
<tbody>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label1" runat="server">Type</asp:Label></td>
<td>
<asp:TextBox id="txtType" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label2" runat="server">Location</asp:Label></td>
<td>
<asp:TextBox id="txtLocation" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label3" runat="server">Manufacturer</asp:Label></td>
<td>
<asp:TextBox id="txtManufacturer" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label4" runat="server">ModelNumber</asp:Label></td>
<td>
<asp:TextBox id="txtModelNumber" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label5" runat="server">SerialNumber</asp:Label></td>
<td>
<asp:TextBox id="txtSerialNumber" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td style="WIDTH: 115px">
<asp:Label id="Label6" runat="server">Other</asp:Label></td>
<td>
<asp:TextBox id="txtOther" runat="server" width="193"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2">
<asp:Button id="btnInsert" onclick="btnInsert_Click" runat="server" width="298" text="INSERT"></asp:Button>
</td>
</tr>
</tbody>
</table>
</form>
</body>
</html>
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July 21st, 2003, 03:43 PM
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Wrox Author
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Join Date: Jun 2003
Posts: 17,089
Thanks: 80
Thanked 1,576 Times in 1,552 Posts
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Hi Aac,
Of course the path doesn't work as I cannot possible know where your database resides ;) The point was, you should add a path to the database name. The right path in your case, is the exact location of your database on your local file system. C:\inetpub\wwwroot\MySite\Database\AAC.mdb was just an example, to be replaced by you.
I also noticed that you use Page.IsValid but that you are not using any validators. I am not sure about this, but is a page valid when there are no validators at all? IMO, it makes sense that it is, but you could check anyway.
Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
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July 21st, 2003, 05:22 PM
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Authorized User
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I've typed in my own path and i'm still getting an error, ive checked it many times over with co-workers and they can't find any problem with the path i have typed, i was using code from a book as a template for my own involving a validator but i didn't want the validator and forgot to remove the check for it, thankyou for the reminder, i'll get ride of that problem, any ideas about what i could be doing wrong with my path to my database?
"Provider=Microsoft.Jet.OLEDB.4.0; data source=C:\inetpub\wwwroot\tae\data\AAC.mdb"
i know you dont know where my database is located but do you see anything that is obviosly wrong?
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July 22nd, 2003, 12:48 AM
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Wrox Author
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Join Date: Jun 2003
Posts: 17,089
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OK, and what error do you get? In an earlier post you said the page runs fine.... An error message would really help diagnosing the problem.
Did you make sure that the ASPNET account has sufficient rights to the database on the File System level? It needs change permission for the .mdb file and the folder it resides in (it needs to create temp files there).
If you haven't done this, open the Properties for your data folder, open the Security tab and give the ASPNET account at least change rights....
Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
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July 22nd, 2003, 10:58 AM
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The page ran fine but didn't make the changes to the actual data base it only made changes to temp files, but when i tried to make a full physical path i'm getting this error message: "CS1009: Unrecognized escape sequence", i gave ASPNET account change rights,
thanks for your help
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July 22nd, 2003, 12:27 PM
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problem solved,
thanks for your help
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July 22nd, 2003, 02:04 PM
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Wrox Author
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Join Date: Jun 2003
Posts: 17,089
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Would you mind sharing your solution? I am sure others will run into the same problem in the future, and nothing is as frustrating as a post with your exact problem, and no solution ;)
Cheers,
Imar
Quote:
quote:Originally posted by aac
problem solved,
thanks for your help
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Imar Spaanjaars
Everyone is unique, except for me.
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July 22nd, 2003, 02:09 PM
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well, ok, its a little embarrassing how stupid this error was but because my computer is a mess i have copies of this file in many places, it was actually being updated i was just looking in the wrong file
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July 22nd, 2003, 02:16 PM
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Wrox Author
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Join Date: Jun 2003
Posts: 17,089
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Thanked 1,576 Times in 1,552 Posts
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;) Oh well, nothing to be embarrassed about. I am sure this happens to everyone once in a while.
Regards,
Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
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