system.data

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Why is my comparison to null, of a value contained in a System.Data.DataRow object, failing?

I am converting an app\'s database from Access to MS SQL Server and encountered a problem with a line of code that checks to see if an it开发者_开发问答em retrieved from the database is null.[详细]

2023-04-12 00:16 分类：问答
Xml loaded dataset is missing a table

When I read an xml file into a dataset, if the root node has more than one of each child tag, it doesn\'t create a table for the root node. Why is this? Is there any way to get it to generate the root[详细]

2023-04-09 23:54 分类：问答
Autogenerated enum definition causing problems on client side

I have a situation like this, where i have WCF Service (VS2008) Hosted somewhere Main Solution (VS2005) which has a Consumer Project of type \'class Library\' with the Service reference to this WCF[详细]

2023-03-28 10:16 分类：问答
How can I get fluent nhibernate working in .net 4

I am using all the dlls from the standard fluent nhibernate download, as well as the standard sqlite dll.[详细]

2023-03-27 17:26 分类：问答
SqlDataReader.GetSqlBinary vs SqlDataReader.GetSqlBytes?

Under the namespace System.Data.SqlClient, we have both SqlDataReader.GetSqlBinary 开发者_如何转开发[详细]

2023-03-21 18:58 分类：问答
Sorting OrderedEnumerableRowCollection .. strings like 00-000, 01-000 are not sorted as expected

i\'ve got some records from a query like this SortingCode (column) Row: 00-005 Row: 00-000 the folowing code, doesn\'t sort this 开发者_如何学C...[详细]

2023-03-20 04:42 分类：问答
Mango and System.Data

I\'ve been experimenting with Mango\'s new data libraries (System.Data.Linq) but I\'ve never used Linq to SQL before and all of my existing code is written for SQLi开发者_如何学Pythonte with ADO.NET.[详细]

2023-03-08 15:54 分类：问答
Is there a built-in class in the .Net framework that can be used to denote an AnsiString?

For dapper I need to build support for passing in AnsiString params. Databases have both unicode and non-unicode strings, picking the right parameter type is sometimes crucial.[详细]

2023-03-07 11:17 分类：问答
How to customize InnerException.Message for System.Data.UpdateException in ASP.NET

First of all thanks开发者_StackOverflow中文版 for taking the time to read through my post. I have a question that may be a newbie piece of cake for some.[详细]

2023-03-01 07:05 分类：问答
C# Create Directory based on ZIP code value of file and Transfer Files using System.IO, System.Data, & CSVReader

Existing App: I have a C# app that runs a search and fetches matching lead files and throws them into a specificied directory.[详细]

2023-02-13 09:14 分类：问答