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Change gridview datasource to connection sting in web.config. ASP.Net 2.0, VS2005, VB.Net, Access Database
Posted on 2007-11-24
I guess this is so basic no one shows how to do it...
The host I use wants me to use a direct path to the database. When I drag a gridview onto the page, it asks for a datasource. I enter the information and everything works fine.
However, I've read that you shouldn't have the physical path in the aspx file, it should be in the webconfig file. So, I need to know how to convert this to the webconfig file:
<asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="C:\myDirectory\d
DeleteCommand="DELETE FROM [events] WHERE [eventID] = ?" InsertCommand="INSERT INTO [events] ([eventID], [eventName], [eventDate], [eventTime], [eventAddress], [eventCity], [eventState], [eventPhone], [eventDescription]) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
SelectCommand="SELECT * FROM [events] ORDER BY [eventID] DESC" UpdateCommand="UPDATE [events] SET [eventName] = ?, [eventDate] = ?, [eventTime] = ?, [eventAddress] = ?, [eventCity] = ?, [eventState] = ?, [eventPhone] = ?, [eventDescription] = ? WHERE [eventID] = ?">
<DeleteParameters>
Best,
MH
The host I use wants me to use a direct path to the database. When I drag a gridview onto the page, it asks for a datasource. I enter the information and everything works fine.
However, I've read that you shouldn't have the physical path in the aspx file, it should be in the webconfig file. So, I need to know how to convert this to the webconfig file:
<asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="C:\myDirectory\d
DeleteCommand="DELETE FROM [events] WHERE [eventID] = ?" InsertCommand="INSERT INTO [events] ([eventID], [eventName], [eventDate], [eventTime], [eventAddress], [eventCity], [eventState], [eventPhone], [eventDescription]) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
SelectCommand="SELECT * FROM [events] ORDER BY [eventID] DESC" UpdateCommand="UPDATE [events] SET [eventName] = ?, [eventDate] = ?, [eventTime] = ?, [eventAddress] = ?, [eventCity] = ?, [eventState] = ?, [eventPhone] = ?, [eventDescription] = ? WHERE [eventID] = ?">
<DeleteParameters>
Best,
MH
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9 Comments
In webconfig file add a section named ConnectionString before web.config section:
<connectionStrings>
<add name="mycs" connectionString="Data Source=38.157.64.125;Initi
</connectionStrings>
Then in your page html source, bind the connection string property of your proper control to this cs using:
ConnectionString=<%$ ConnectionStrings:mycs %>
(You may use data source controls)
<connectionStrings>
<add name="mycs" connectionString="Data Source=38.157.64.125;Initi
</connectionStrings>
Then in your page html source, bind the connection string property of your proper control to this cs using:
ConnectionString=<%$ ConnectionStrings:mycs %>
(You may use data source controls)
Sorry, that's where you lose me. How do I add that to the code above? I know how to put it in the webconfig. What I don't know is how or where to put the other part.
Can you show me an example using the code above?
Thanks,
MH
Can you show me an example using the code above?
Thanks,
MH
Here is a sample file:
<?xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
\Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration>
<appSettings/>
<connectionStrings>
<add name="myCS" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source='E:\Mortaza\My Projects\Visual Basic Working Projects\Bell Telephone\Main\Database\Mrtdb.mdb'"/>
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
-->
<compilation debug="false" strict="false" explicit="true" />
<pages>
<namespaces>
<clear />
<add namespace="System" />
<add namespace="System.Collections" />
<add namespace="System.Collections.Specialized" />
<add namespace="System.Configuration" />
<add namespace="System.Text" />
<add namespace="System.Text.RegularExpressions" />
<add namespace="System.Web" />
<add namespace="System.Web.Caching" />
<add namespace="System.Web.SessionState" />
<add namespace="System.Web.Security" />
<add namespace="System.Web.Profile" />
<add namespace="System.Web.UI" />
<add namespace="System.Web.UI.WebControls" />
<add namespace="System.Web.UI.WebControls.WebParts" />
<add namespace="System.Web.UI.HtmlControls" />
</namespaces>
</pages>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows" />
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
</system.web>
</configuration>
Sorry for misunderstanding, your aspx file should look like this:
(Assumed that your db file is copied to your web sites root directory)
(Assumed that your db file is copied to your web sites root directory)
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="BlackListID"
DataSourceID="AccessDataSource1">
<Columns>
<asp:BoundField DataField="BlackListID" HeaderText="BlackListID" InsertVisible="False"
ReadOnly="True" SortExpression="BlackListID" />
<asp:BoundField DataField="Tel_vc" HeaderText="Tel_vc" SortExpression="Tel_vc" />
<asp:BoundField DataField="Comments_vc" HeaderText="Comments_vc" SortExpression="Comments_vc" />
</Columns>
</asp:GridView>
</div>
<asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/Mrtdb.mdb"
SelectCommand="SELECT [BlackListID], [Tel_vc], [Comments_vc] FROM [BlackList_T]">
</asp:AccessDataSource>
</form>
</body>
</html>
Mortaza_doulaty,
In my case, the above wont work. The database is above root level so I can't use the ~/database.mdb.
What I need is to use the connection string from the webconfig in the .aspx file. In the above, you show that the connection string is name="myCS"
Is there a way to use the myCS in the gridview code?
Thanks,
MH
In my case, the above wont work. The database is above root level so I can't use the ~/database.mdb.
What I need is to use the connection string from the webconfig in the .aspx file. In the above, you show that the connection string is name="myCS"
Is there a way to use the myCS in the gridview code?
Thanks,
MH
Hi, you cannot use a connection string with an AccessDataSource. What you need to do is place the file in the app_data folder so that it can be found using a relative path.
joex911,
Not that I don't believe you, but I'll leave this open a while because I have absolutely no way of knowing. I guess I just do it the way the host suggests and let them worry about the security...
Best,
MH
Not that I don't believe you, but I'll leave this open a while because I have absolutely no way of knowing. I guess I just do it the way the host suggests and let them worry about the security...
Best,
MH
what you could do is used an SqlDataSource instead, that way you can use the connection string in the web.config file.
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:myCS %>" ProviderName="<%$ ConnectionStrings:myCS.ProviderName %>" SelectCommand="SSELECT [BlackListID], [Tel_vc], [Comments_vc] FROM [BlackList_T]"></asp:SqlDataSource>
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