IT Answers » VB.NET 2005

How to retrieve, add and update data from SQL Server 2005 manually using VB.NET 2005?

Bbm — Mon, 13 Jun 2011 18:03:47 +0000

New Discussion Post by dil1234

Developing a project using VB.net front end, and Access in back end

Hdnlel — Sat, 23 Oct 2010 16:49:04 +0000

i m developing a project Using vb.net front end, and using ms access in back end,i would like in this project (with customer record save his photo in data base in vb.net5.0. when i add customer photo in form it is show with customer record How i could do this could u help me pls.

Word document using VB.net

R2 — Fri, 17 Sep 2010 09:37:07 +0000

there is a property of word document Tools->Option->TrackChanges->Changed Line. is it possible to set the ChangedLine property of word document by Vb.net programming.

CREATING REPORT THROUGH CRYSTAL REPORT AND VB.NET

SATYENDRA — Mon, 14 Jun 2010 10:53:37 +0000

ACTUALLY, I AM CREATING REPORT THROUGH CRYSTAL REPORT AND VB.NET .

PLEASE GUIDE ME THAT HOW I WILL I LINK THE VB FORM WITH CRYSTAL REPORT.

Value cannot be null.Parameter name:path1

Meeta — Wed, 28 Apr 2010 06:07:26 +0000

While opening crystal report in crystal report viewer,error occured on some machine. value cannot be null.parameter name:path1

LISTBOX

Ajibola — Sat, 27 Mar 2010 00:40:16 +0000

I load list box with file data of 5 elements(k2,k2,k3,k4,k5) with up to 10000 results

I get the sum of these elements to be some integer(3,6,7,8,9,11)

I write a code to eliminate some results like this

If (k1+k2+k3+k4+k5) <> 3 or

(k1+k2+k3+k4+k5) <> 6 or

If (k1+k2+k3+k4+k5) <> 7 or

(k1+k2+k3+k4+k5) <> 8 or

If (k1+k2+k3+k4+k5) <> 9 or

(k1+k2+k3+k4+k5) <> 11 then

listbox.add(k1 ” ;” & _

k2 ” ;” & _ etc

Is it possible to write a code that reflects all these integer(3,6,7,8,9,11) at ones?

LISTBOX

Ajibola — Sat, 27 Mar 2010 00:17:57 +0000

I get some data into listbox from base through SQL

The number of data ranges from 8 to 15(b1,b2,b3,b4,b5,b6,b7,b8,……b15) which gives up to 1000 results.

If it 8 data(b1,b2,b3,b4,b5,b6,b7,b8) I want to have only results where sum of any 7 data of 8 or 7 data of( 9,10,,,,,15) data are some integer (25,26,35,39,41 etc)

In one word I want to add data to listbox only if the following conditions are satisfied

( b1+b2+b3+b4+b5+b6+b7) = (25,26,35,39,41) or

( b1+b2+b3+b4+b5+b6+b8) = (25,26,35,39,41) or

( b1+b2+b3+b4+b5+b7+b8) = (25,26,35,39,41) or

( b1+b2+b3+b4+b6+b7+b8) = (25,26,35,39,41) or

( b1+b2+b3+b5+b6+b7+b8) = (25,26,35,39,41) or

( b1+b2+b4+b5+b6+b7+b8) = (25,26,35,39,41) or

( b1+b3+b4+b5+b6+b7+b8) = (25,26,35,39,41) or

( b2+b3+b4+b5+b6+b7+b8) = (25,26,35,39,41)

Please help

Cannot INSERT data into table with identity column

Obhasha07 — Sat, 09 Jan 2010 02:54:53 +0000

In my program I have an EmployeeRegistry table which holds data of each employee’s work attendance. Every attendance record is uniquely distinguished by an IDENTITY COLUMN called “AttendanceID” which has an IDENTITY SEED of 1 and an IDENTITY increment of 1. However when I try to insert an attendance record to the table via my VB.NET program. it gives an error saying:

“An explicit value for the identity column in table ‘EmployeeRegistry’ can only be specified when a column list is used and IDENTITY_INSERT is ON.” I tried to insert data into the table using an SQL query via the SQL management studio and it inserted the data without a problem. What might be wrong?

Here’s the coding:



 Public Sub SaveRecord()       Dim objSys As New SpringsSystem       Dim objCommand As New SqlCommand()       Dim objReader As SqlDataReader         Try              objSys.Connect()              objCommand.Connection = objSys.objConnection              objCommand.CommandText = "SELECT AttendanceID FROM   EmployeeRegistry WHERE AttendanceID = '" & Me.AttendanceNumber & "'"              objReader = objCommand.ExecuteReader()

              If objReader.HasRows = False Then                     objReader.Close()                     objCommand.CommandText = "INSERT INTO  EmployeeRegistry VALUES('" & Me.EmployeeID & "', '" & Me.AttendanceDate & "', '" & Me.WorkArrivalTime & "', '" & Me.WorkLeaveTime & "', '" & Me.ShortLeaveTime & "', '" & Me.ReturnTime & "', Null)"                     objCommand.ExecuteNonQuery()

              Else                     objReader.Close()                     objCommand.CommandText = "UPDATE EmployeeRegistry  SET EmployeeID = '" & Me.EmployeeID & "', AttendanceDate = '" & Me.AttendanceDate & "', WorkArrivalTime = '" & Me.WorkArrivalTime & "', WorkLeaveTime = '" & Me.WorkLeaveTime & "', " & _  "ShortLeaveTime = '" & Me.ShortLeaveTime & "', ReturnTime = '" & Me.ReturnTime & "', ExpenseID = Null WHERE AttendanceID = '" & Me.AttendanceNumber & "'"                     objCommand.ExecuteNonQuery()              End If

       Catch ex As Exception              MessageBox.Show(ex.Message, "Error saving Attendance Data Recrod", MessageBoxButtons.OK, MessageBoxIcon.Error) 

       Finally              objSys.objConnection.Close()              objSys = Nothing              objCommand.Dispose()              objReader = Nothing       End Try End Sub

Crystal Reports problem

Obhasha07 — Thu, 26 Nov 2009 02:35:35 +0000

here’s the coding for my crystal report display

 Imports CrystalDecisions.CrystalReports.Engine Dim crRep As New ReportDocument Dim objItemSale As New ItemSale(strKey) Dim dsSet As New DataSet("InvoiceData") Try

crRep.Load("G:Format BackupLahiru DocumentsVisual Studio 2005 ProjectsSpringsSysSpringsSyscrSaleIn… dsSet = objItemSale.GetSaleData() crRep.SetDataSource(dsSet) crvReport.ReportSource = crRep crvReport.Refresh()

Catch ex As Exception MessageBox.Show(ex.Message, "Error viewing Report", MessageBoxButtons.OK, MessageBoxIcon.Error)

Finally crRep = Nothing End Try

The above code is written in the report viewer form’s load event method. ‘this is the query for my dataset (used in objItemSale.GetSaleData(string) function) SELECT ItemSale.BillNo, ItemSale.IncomeID, Income.IncomeDate, Income.IncomeValue, ListItem.ItemID, Item.ItemName, ListItem.SaleQuantity, ListItem.SalePrice, ItemSale.SaleItemListID FROM Income INNER JOIN ItemSale ON Income.IncomeID = ItemSale.IncomeID INNER JOIN SaleItemList ON ItemSale.SaleItemListID = SaleItemList.SaleItemListID INNER JOIN ListItem ON SaleItemList.SaleItemListID = ListItem.SaleItemListID INNER JOIN Item ON ListItem.ItemID = Item.ItemID WHERE ItemSale.BillNo = ‘ ” & Me.BillNumber & ” ‘ ” Me.BillNumber is a property of one of my classes. it holds a bill number in an Item Sale invoice. when I run this on SQL server it gives the correct result but in the crystal report it gives the same result as the report preview in the report designer. no matter what parameter bill number I use.

I also tried using an data table instead of an data set as the report data source. When I try to view the report I got this error.

[strong]“Cannot determine the qureries necessary to get data for this report. [/strong]

[strong]Details: This query cannot be performed. The link order requires Many to One query configuration which is not supported. Please rearrange the links.[/strong]

[strong] Failed to open a rowset. Error in File C:DOCUME~1LahiruLOCALS~1TempcrSaleInvoice {6A7FB2D4-E5A7-458E-83FB-BB22C3E5629E}.rpt: Failed to open a rowset.” [/strong] Please help!!!!

How do I view a Crystal Report using properties of my object classes.

Obhasha07 — Sun, 22 Nov 2009 03:50:51 +0000

In my project I have a lot of object classes. For exaple Student object class: This represents a single student with properties such as Studnet Name, Age, StudentID ect.

Now I want to create reports for my application. While designing the report (using crystal reports), I’ve found that my object classes’ properties can alos be used as report fields. I’ve designed the report using my object class properties but I don’t know how to display the report. Can anyone help me.

Additional Info: I have methods in all my objcet classes which can assign values for all the object’s properties. For example: Student class has a GetStudentInfo() method which will fill all the class properties with values from the database.

I’m trying to do this using crystal reports. Can I do this with Microsoft Reports (rdlc)? If I can can anyone give me a tutorial?