I am using C#.Net application in which i created a dataset.Now i want to create a method in which i will enter a record in one table which will return a value ie primary key.Now by using that primary key i have to insert records in 5 tables and i have to use that primary key as a foreign key for this 5 tables using dataset. ...
I've created a strongly typed dataset (MyDataSet) in my .NET app. For the sake of simplicity, we'll say it has one DataTable (MyDataTable), with one column (MyCol). MyCol has its DataType property set to "System.Int32", and its AllowDBNull property set to "true". I'd like to manually create a new row, and add it to this dataset. I cre...
Here's the scenario: I want to be able to support both SQL Server CE and SQL Server 200x databases using a strongly-typed dataset. The problem I'm getting is that it's compiling using a specific type of connection (either a SqlConnection or a SqlCeConnection) so I can't change the type at runtime to any IDbConnection object. Am I aski...
I've got a bunch of strongly typed DataSet that each have two tables. One table is unique for each DataSet, but the second, "MetaData", has the same schema for each DataSet. At runtime, I determine which DataSet I want to use, and populate the data table in the appropriate way from a DB. I then want to populate the MetaData table. Th...
Hi all, for the purpose of a test, I would like to mock my typed dataset. So I want to create it, with appropriate value, with C# code. But I don't know how to do that. Each tutorial I see, are about non-typed dataset. Has someone an example ? Or maybe a link that explain this ? Thanks in advance for your help ...
Struggling here, many documents I find are CF 1.0 centric and talk of the 2.0 changes to allow generics and typed DS'es on CF 2.0. Well, CF 2.0 has come and gone, and MS still shows these without update. I am not ready to jump into WCF, and my clients have a lot of older compact framework 2.0 machines. I am fortunate in that these We...
Hi all I'm getting the following error from a VB NET web application written in VS 2003, on framework 1.1. The web app is running on Windows Server 2000, IIS 5, and is reading from a SQL server 2000 database running on the same machine. System.Data.ConstraintException: Failed to enable constraints. One or more rows contain valu...
In our applications, I can't think of many cases where we care about null string fields. We just want them to show as empty strings in most situations. So when using the built in ADO.NET dataset / datatables, the error: Conversion from type DBNull to type String is not valid is all too common later on in the app when referring...
Hi, I have a many-to-many relation in 3 tables: ProgramUserGroup and Feature are the two main tables, and the link between them is LinkFeatureWithProgramUserGroup, where I have Foreign key relations to the two parent tables. I have a dataset with inserts: I want to add a new row to ProgramUserGroup, and a related (existing) Feature to t...
Hey all, I'm trying to build a strongly-typed dataset in ADO.Net and am having a little trouble with one aspect of the TableAdapters. My query looks like SELECT * FROM testdict.ModuleVariable WHERE Module = ? My problem revolves around the testdict part. We use several different schemas to access our data (because of a multiplexed ...
Do they even exist? We have a website with a massive DAL using strongly typed datasets. I think it would be great if I had a way to inject some tracing calls before and after each of the database calls. I don't see any events, nor any other way to hook into the TableAdapter such that I can get tracing calls before it executes the sql....
Hi, I have following XML document: <Form ID="1"> <Persons> <Person Name="Mike"/> <Person Name="Alan"/> </Persons> </Form> I have created the Strongly Typed DataSet file (.XSD) and the MyForm.cs file based on that .XSD file Then, how to add a new Person to table Persons ? I tried that code: Form_3 form =...
I have a view from my database being represented as a TableAdapter, but I cannot get it to generate the Update methods. The, "Create methods to send updates directly to the database (GenerateDBDirectMethods)" is grayed out. How can I enable this? Or will I have to do this manually? ...
I'm about to develop databse server app; I have decided not to use typed dataset/dataset, except in the DAL, (so I'm not asking the question whether to use dataset or custom objects). Populating my custom objects with data requiers an interaction with DataSet in the DAL. I have seen a reasonable way of using typed dataset for this purp...
I'm working in an erp project using Visual Studio 2008 Sp1, I've a typed dataset it was containg alot of datatable and alot of table adapter the .Designer.cs file was 8 MB, suddenly when i was trying to openit using visual studio designer the following code comes to me <?xml version="1.0" encoding="utf-8"?> <xs:schema id="erpDataSet...
Hi all, first question ever on this site. I've been having a real stubborn problem using Visual Studio 2008 and I'm hoping someone has figured this out before. I have 2 libraries and 1 project that use strongly typed datasets (MSSQL backend) that I generated using the "Configure DataSet with Wizard" option on in Data Sources. I've had...
Hello, I'm trying to understand what is the best practice using XSD tables generated from the Database scheme that I currently use. 1) Do you think the XSD information should be located as part of the Model? 2) Does it mean that Data Access Layer returns Datasets and other generated objects? 3) Does it goes through all the system lay...
here is my table in the dataset: SELECT tag_work_field.* FROM tag_work_field I created this query in typed dataset: UPDATE contacts.tag_work_field SET work_Field_name = @work_Field_name WHERE ((work_Field_name = @Original_work_Field_name)) and I called it: UpdateWorkField Now I Created my data adepter and update th...
I want to execute a custom command against a typed dataset I created using the dataset designer. For this I need to get a reference to the underlying connection, right? How to go about this? In which autogenerated file can I find the connection? ...
See this question. I have the following code that executes against a SQLIte database using a strongly typed dataset. messagesAdapter.Update(messages);//messages is a DataTable var connection = messagesAdapter.Connection; var retrieveIndexCommand= connection.CreateCommand(); retrieveIndexCommand.CommandTex...