Forms Data Controls :: Collections Versus Reading Database Every-time
Jan 18, 2010
1. I know about collections but I dont remember the precess. I know you drag a sqldatasource control on the form(Select everything in the database ie. selct *) and then delete it. But how do I use it i code.
Example. I need to select services where country=canada from the Agencies table.
2. I know how to manually pull data from an access database using the code below. I want to know how to pull data from a sql database just like the one below.
3. explain the difference between Collections and manually pulling it like the one bellow?
<code>
<script>
Stringpath = Server.Mappath = Server. MapPath(/website");
String connStr = Provider=Microsoft.Jet.OLEDB.4.0" +"DataSource="+path+
\Database;
OleDBConnnection conn = new OleDBConnection(connStr);
conn.open();
OleDbCommand cmd= new OleDBCommand();
cmd.COnnection = conn;
cmdCommandText = "Select * From [Suppliers];
OledbDataReader dr= cmd.ExecuteReader();
Response.write(dr.getvalue(1);
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[code].....
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[Code]....
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Jul 13, 2010
I have the following data that basically I only need a few bits of information from:
Resource:X - Y;Z - Å;Type:(all) From Date:
07/12/2010 - To Date 07/12/2010 Sort
by:Time Include Referring
source/physician:No Footer:Default
Criteria:None
","Appointments","X,
Y","ZAssociates","Monday, July 12,
2010","Time","Patient Name","Patient
ID","Appt. Type","Ref. Source/
Physician","Phone","Type","DOB
","Z, X","Y","7/12/2010
12:00:00AM","Time","Patient
Name","Patient ID","Appt.
Type","Phone","Type","DOB "," 7:30
[snip]
The only things I need from this are:
Patients Name
Drs Name
Patients Phone Number
Appt Time
Appt Date
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Imports System.IO
Imports System.Data
Imports System.Data.SqlClient
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
End Sub
Protected Sub Submit1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim SaveLocation = "\xxxWEB3wwwrootWebfile1RemindersDoug_Ancildoug.csv"
If UploadFile(SaveLocation) Then
'the file was uploaded: now try saving it to the database
SaveToDatabase(SaveLocation)
End If
End Sub
Private Function UploadFile(ByVal SavePath As String) As Boolean
Dim fileWasUploaded As Boolean = False 'indicates whether or not the file was uploaded
'Checking if the file upload control contains a file
If Not File1.PostedFile Is Nothing And File1.PostedFile.ContentLength > 0 Then
Try
'checking if it was .txt file BEFORE UPLOADING IT!
'You used to upload it first...but the file could be a virus
If File1.FileName = ("doug.csv") = False Then
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'just post the validation message
message.Text = "Sorry, thats not the correct file."
message2.Text = "Please locate and upload 'doug.csv'"
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'The file is a .txt file
'checking to see if the file exists already
'If it does exist Deleting the existing one so that the new one can be created
If IO.File.Exists(SavePath) Then
IO.File.Delete(SavePath)
End If
'Now upload the file (save it to your server)
File1.PostedFile.SaveAs(SavePath)
'After saving it check to see if it exists
If File.Exists(SavePath) Then
'Upload was sucessful
message.Text = "Thank you for your submission."
fileWasUploaded = True
Else
'the file was not saved
message.Text = "Unable to save the file."
End If
End If
Catch Exc As Exception
'We encountered a problem
message.Text = "Your file was not in the correct format. Please contact Customer Service at xxxx-xxxx-xxxx."
End Try
Else
'No file was selected for uploading
message.Text = "Please select a file to upload."
End If
Return fileWasUploaded
End Function
Private Sub SaveToDatabase(ByVal SavePath As String)
Try
Dim sqlQueryText As String = _
"BULK INSERT dialerresults " + _
"FROM '" & SavePath & "' " + _
"WITH ( FIELDTERMINATOR = ',' , ROWTERMINATOR = '
' )"
' and bulk import the data:
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Using con As New SqlConnection(connection)
con.Open()
' execute the bulk import
Using cmd As New SqlCommand(sqlQueryText, con)
cmd.ExecuteNonQuery()
End Using
End Using
'Else
'message.Text="ConfigurationManager.ConnectionStrings('Dialerresults') is Nothing!"
'End If
Catch ex As Exception
message.Text = "Your file was not in the correct format. Please contact Customer Service at xxxxxxx."
End Try
End Sub
End Class
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Jun 4, 2010
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String myConn = ConfigurationManager.ConnectionStrings["DBConnectionString"].ToString();
SqlConnection con = new SqlConnection(myConn);
SqlCommand cmd = new SqlCommand();[code].....
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public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
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[code]....
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