Cystal Reports With Linq2Sql?
Feb 25, 2010
I want to use Linq2Sql as the data source for my Crystal reports. I have all my data in my domain objects in the form of Lists. The problem is all my domain model resides in a different namespace in the form of a .dll. And when i try to assign a data source for my report in Database Expert window, under .NET Objects, i can only see classes that are available in the current project and not from other projects in my solution, nor from other namespaces.
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Jan 13, 2009
how to make linq2sql behave like my custom code used to, I want to check to make sure that it isn't already "built" in behavior that I can just use by setting up the relationships right in the designer...
Very simple example: I have two tables: Person and Notes, with a 1 to many relationship (1 Person, many notes), linked by Person.ID->Note.PersonID.
I have a stored procedure (all data access is done via SP's and I plan on continuing that) which makes the Link2SQL a bit more work for me.
sp_PersonGet(@ID int) which returns the person record and sp_PersonNotesGet(@PersonID) which returns a set of related notes for this person.So far so good, I have an object:
Dim myPerson As Person = db.PersonGet(pnID).Single
and I can access my fields: myPerson.Name, myPerson.Phone etc.and I can also do a
Dim myNotes As Notes = db.PersonNotesGet(pnID)
to get a set of notes and I can iterate thru this list like:
For Each N As Note In myNotes
( do something)
Next[code].....
Basically, Linq2SQl would need to call 2 stored procedures each time a Person record is created...Is this doable "out of the box", or is this something I need to code around for myself?
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Dec 22, 2009
I have this one line property
Public ReadOnly Property DateToUniversal(ByVal dt As Nullable(Of Date)) As String
Get
Return If(dt.HasValue, dt.Value.ToString("u").Substring(0, 10), "")
[code].....
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Sep 23, 2009
I've got a very simple data structure. I'm using SQLExpress with Linq2SQL and vb.net
**ParentClass**
parentId
name
[code].....
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May 7, 2011
I set up a test harness by checking for and then deleting records added to the db in the previous testing session, and then I test my recording adding code by adding back the same records.Interestingly this code works fine when there is a break in the debugger, but fails with a "duplicate key" exception when I let it run with no breaks, which leads me to believe there is some kind of concurrency issue.The basic metacode is as follows:
DoTest()
dim j as datacontext
dim recs = from myrecs in j.mythings select myrecs where myrecs.key="key1" or
myrecs.key = "key2"
[code]....
I've confirmed that I'm properly deleted the previous added records, and this works fine as does adding the new records when I have a break in the code before I hit the add records step. but without the break, it throws duplicate key exceptions in the "addrecordestomytable" method suggesting that it hasn't grabbed the current version of the table when it creates the new data context in addrecordstomytable, even though the records should have already been deleted.I've tried refreshing the table, but this doesn't seem to work either.Note backing database is ms sql server 10?
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Oct 4, 2011
I set up a test harness by checking for and then deleting records added to the db in the previous testing session, and then I test my recording adding code by adding back the same records.Interestingly this code works fine when there is a break in the debugger, but fails with a "duplicate key" exception when I let it run with no breaks, which leads me to believe there is some kind of concurrency issue
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Jun 20, 2012
[Code]...
How to create a LINQ query that allows the end user to choose a few months?
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Sep 28, 2011
what is the most robust method for adding a empty row (to select "nothing") to a ListBox?
Dim List = Enumerable.Repeat(New TABLE With {.Text = "", .ID = -1}, 1).AsQueryable().Union(From t In mainctx.TABLEs)
ddlMangelKategorie.DisplayMember = "Text"
ddlMangelKategorie.ValueMember = "ID"
ddlMangelKategorie.DataSource = List.ToList
But this has some drawbacks:wordy must explicit write the Type (TABLE in this case), so i cant wrap this in a function have not found an solution, which works with anonymous types I.e. if I add a From t In mainctx.TABLEs Select Text=col1, id=col2 to the query, this method does not work anymore.
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Aug 26, 2011
I am creating reports in Crystal Reports that is integrated within Visual Studio 2008, and I noticed that some of the features are disabled. One is the ability to link tables with a Right Outer Join or Full Outer Join. I also cannot "Show SQL Query" in Crystal Reports. Is this something I can enable or do I have to purchase or upgrade?
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Dec 9, 2010
Basically, I am looking for a method on how to preview reports from a datagrid or it can be from the access database which populates the data to the datagrid (then displays this in the datagridview) in vb.net vs 2010.I believe there are two methods using the ReportViewer or using Crystal Reports, but so far, I have no idea how to get them to work. The first idea would be favourable - using the data from a datagridview (which may of already been sorted, filter etc) and be able to produce a report on that.
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Apr 28, 2011
i am developing an application in vb.net having crystal reportsi have stored all my reports in a folder called report in my applicationbut initally when i executed i got a error msg like the report doesnot exixts in debug folderso i copied all the reports from report folder to debug folder & its workingany changes that i mke in report folder needs to be copied into the debug folder alsois it possible that the reports be executed from reports folder only & not from debug folder as everytime i need to make changes in the debug folderhow can i chnage the path to reports folder
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Dec 1, 2011
How can we create a report in vb.net without using any crystal reports
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Jun 21, 2010
I am working on VB.NET(Visual studio 2008)..I completed developing my application and i need to deploy the application. I tried it and faced problems in some areas like adding crystal reports to the setup and deployment. I created a setup file to my application and everything is fine except crystal reports...its showing the error like; An error occurred in crystalDecisions.Reports, crystalEngine threw exception.
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Dec 22, 2010
I'm using VS 2008 to develop a solution which will report on data mostly contained in SQL Express databases, across two servers. It will be used by up to about 10 XP clients. I am unfamiliar with the Reports Applications. Will I need to buy extra licenses to use a Crystal Reports application? Why are they both included in VS? What is the basic difference between them?
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Apr 14, 2009
tell me wat is the difference between crystal reports created in vb and in vb.net??how to create crystal reports in vb??
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Feb 10, 2009
I was wondering is there anyway i can write some code in vb.net to run a report off my reporting services server have it exported to a certain format and saved as a file all from within VB.Net.
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Jul 24, 2010
a tutorial or walkthroug on how to crease a simple report in VB.net.The first report need to be simple, like a membership list -- no aggregates or averages etc.. I have the data in a single table.
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Jun 5, 2011
i wanted to know how can i create reports in vb.net
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Jul 30, 2009
how to create reports and print and conditional reports etc. crystal reports or microsoft reports which one is good
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Sep 26, 2011
I am preparing crystal reports using vb.net 2008 with ms sql server 2005.everything is showing fine.. except that i want my report to be multiple column... I cant do this using "format multiple column" option because the data is not shown in details section. Actually i need to group the data in data.
e.g: i am preparing a warehouse report to know how much quantity of which products are left, products with 0 (zero) value are not displayed..
I want my reports to be as follows: item1 item_quantity item2 item_quantity item3 item_quantity
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Sep 20, 2010
I am a beginner in VB.NET. I have made a small project and now i would like to make some reports to complete the project.
how i can work with reports in VB.NET. I want to retrieve data from SQL Server 2000 using Stored Procedures and generate a report in VB.NET.
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Sep 20, 2009
How create reports in 3.5.
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Jan 15, 2012
Just want to ask,how can i create a log file on vb.net
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Jul 6, 2009
how to create reports in vb.net?
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Mar 25, 2011
I set up reports to generate stats based on data in a sql server 2008 database and considering the amount of data, reports can take a long time to generate for some queries. I want to attach the reports to a web app or some app that when a user clicks on a tab or button the relevant report produces the results immediately. someone mentioned to me doing the reports every hour and storing the results in a db and then just query the most recent. Using visual studio 2010 for coding.
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Jul 26, 2009
How can I connect to a Crystal Reports 4.6 report that connects to SQL Server 2005 as a data source, using Visual Basic?I don't want to specify the connection string in the report. I want to pass the connection from VB. Is there any way to do this?
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Jun 22, 2012
I would like to know if there's anything that can display data differently than what's stored in the DB.Here's my example. I have a column called Active and in the DB table, 0 represents Active, -1 represents InActive.In my report, when showing whether or not a listing is Active, I'd rather have the words Active and Inactive rather than 0 and -1.
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Jan 28, 2011
I am working on Windows Forms Projects.I am creating a report for customers.The report data is pulled from a "CustomerDetails" table.A field in the table is called "CustPhotoName", this holds a string which relates to an image file.
I Currently have a report set up which runs for a single customer by passing in a customer ID. Then using the passed in ID to populate a Dataset with an ImageRow and then a sub report with the image from the dataset.
I am wanting to set up this report where I can pass in an array of customer IDs and produce the reports (1 page per customer with image (if CustPhotoName has value))
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May 14, 2009
I have created reports using Crystal Reports in my asp.net application(vb). It was fine. But when I run it in another system, the report loading fails. So I modified my code like this.
sub Loadreport()
try
Dim sreport as new ReportDocument
sreport.Load(Server.MapPath("ClientList.rpt"))
[code]....
When the control comes to the line:-
sreport.Load(Server.MapPath("ClientList.rpt"))
it jumps to the catch block showing "Invalid Report path". But initially, the code was not showing any error. I haven't changed the path.
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Mar 29, 2011
I made a program in VB .net 2008 that has a form in which there is a Crystal Report Viewer object. Here is some code:
[Code]...
1. Some reports show tens and hundreds of thousands or records (they are required to do so, so no work-around is possible), thus the time it takes for the Crystal Report Viewer control to actually show the report is very long. I would like to display like a waiting dialog window WHILE the report is loading its records telling the user to wait for it to load.
2. Another idea would be to show the number of records currently loaded (and continuously updated as the report loads them) from the total number. This is actually shown in my reports when i open them with Crystal Reports 10, but NOT with the Viewer control on the form! How can i make it show this?
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