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How to merge multiple dataviews into one?

I have three dataviews (dataview1, dataview2, and dataview3). These are of type System.Data.DataView, and all three have the same columns. Is there an easy way to merge them into one, so I have one da[详细]

2023-04-09 09:48 分类：问答
Best portable DB engine that supports Linq

I need to know what is the best portable db, for this situation I\'ve an application base on sql server db, we use both LINQ TO SQL, and ADO.NET, in this appl开发者_如何学运维ication.[详细]

2023-04-09 06:53 分类：问答
How to increment an auto-increment field with ADO.NET in C#

I have a database table with three fields: Product(ProdId, Name, Price) Where ProdId is a auto-increment field. The auto-increment is with seed 1, starting from 0.[详细]

2023-04-09 06:29 分类：问答
Generation of employee id

I have form empdetails like this EmpId:textboxName:textbox username:textboxPassword:textbox I need to generate empid and it start with 0001 and display it in the empid field and all other informatio[详细]

2023-04-09 00:52 分类：问答
Member Mapping specified is not valid.Error in ADO.net Entity Framework when add new column in database?

I am very new to ADo.net entity framework and i am getting the following error The type \'Edm.Byte\' of the member \'IsActive\' in the conceptual side type[详细]

2023-04-08 23:45 分类：问答
.NET SQL new table doesn't exist

NOTE: This issue has been resolved, but lead to a new question. I\'m getting this error: System.Data.SqlClient.SqlException \"Invalid object name [tablename]\"[详细]

2023-04-08 22:06 分类：问答
Fastest way to retrieve data from a database in .NET?

Using ADO.NET, what is the fastest way to retrieve data from the database and populate the开发者_JAVA百科 data into my business objects?[详细]

2023-04-08 20:40 分类：问答
Executing Sql Command only once

I have a Database DB with a table name population but with no Primary Key. Means it can have duplication of data. For example: I have 5 families (f1,f2,f3,f4,f5) with different members inside it (and[详细]

2023-04-08 15:25 分类：问答
Inserting data doesn't replicate into database

I have a written a sample code to insert data into a table and it says successfully inserted, but when I see the data in database in the database explorer, table shows nothing.[详细]

2023-04-08 10:46 分类：问答
asp.net open source solution to "Adding a row to a specific SQL table"? [closed]

Closed. This question is seeking recommendations for books, tools, software libraries, and more. It does not meet Stack Overflow guidelines. It is not currently accepting answers开发者_StackOverflow.[详细]

2023-04-08 04:13 分类：问答