SQLConnection.Open() Problem

Feb 14, 2008

Hi, 

When i run my script it gets about 5 lines before the bottom and kicks this out SQLConnection.Open()

An error has occurred while establishing a connection to the server.  When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Does this mean that SQL Server 2005 Express doesnt allow remote connections and is there anything i can do to get round this (im running it locally)? My data Source is - SQLDataSource1 - Picturesdb.MDF and my local server is Localhost:1921. Code behind Below,

Imports System.IO

Imports System.DataImports System.Data.SqlClient

 Partial Class WebForm1

Inherits System.Web.UI.PageProtected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpload.Click

Dim strFileName As String

Dim strFilePath As String

Dim strFolder As StringDim SQLConnection As Data.SqlClient.SqlConnection Dim SQLCommand As Data.SqlClient.SqlCommand

strFolder = "C:Documents and SettingsRoss HintonMy DocumentsVisual Studio 2005WebSitesuploadsiteimagesfolder"

strFileName = oFile.PostedFile.FileName

strFileName = Path.GetFileName(strFileName)

If (Not Directory.Exists(strFolder)) Then

Directory.CreateDirectory(strFolder)

End If

strFilePath = strFolder & strFileName

If File.Exists(strFilePath) Then

lblUploadResult.Text = strFileName & " already exists on the server!"

ElseSQLConnection = New SqlConnection("localhost:1921")SQLCommand = New SqlCommand

SQLCommand.CommandType = CommandType.StoredProcedure

SQLCommand.CommandText = "spInsertImageName" ' your sp name

SQLCommand.Connection = SQLConnection

SQLConnection.Open()

SQLCommand.Parameters.AddWithValue("@image", strFileName) ' sp parameter name

SQLCommand.ExecuteNonQuery()

oFile.PostedFile.SaveAs(strFilePath)

lblUploadResult.Text = strFileName & " has been successfully uploaded."

End If

frmConfirmation.Visible = TrueEnd Sub

End Class

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using System.Text;
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}

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<br />
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Hello,
I've got some questions about SqlConnection.Parameters collection.
1) I tried add parameters and I don't know if following 2 codes are equivalent 
sql.Parameters.Add(new SqlParameter("@FirstName", SqlDbType.NVarChar, 10));sql.Parameters["@FirstName"].Value = firstname;-----sql.Parameters.Add("@FirstName", SqlDbType.NVarChar, 10);sql.Parameters["@FirstName"].Value = firstname;
Is some difference between this codes? Or in second case is created instance of SqlParamater automaticly?
2) I read that Add method is in asp.net 2.0 deprected. And now it uses Addwithvalue method, but when I don't write value of Parameter to the constructor, can (should) I use still Add method? In this case VS doesn't show any warning. VS shows warning only if I use value (object) in constructor.

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SqlDataSource And SqlConnection

Jun 7, 2006

  In my web app, I have a number of nonvisual objects that share a SqlConnection. On one of my pages, I have a SqlDataSource ('cause it's quick and just needs to wrap a table). Is there any way to tell it, "Here, use this existing database connection?" In my quick and dirty testing, it looks like it's opening a second connection, which is wasteful.
 
Thanks,
Mike

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