datareader

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How do I check a datareader for null?

I have an aspx page which allows a user to submit modified entries into the database, but when the user clicks Submit to fire the stored procedure I want to first run a check to see if a modified row[详细]

2023-02-10 07:40 分类：问答
Having an issue with "DataReader already open"

I\'ve searched on SO and didn\'t find any answer to the problem I\'m having. I made a linq to get all data from two tables and one ajax call to get new data and fill my dropdownlist as the other drop[详细]

2023-02-05 16:39 分类：问答
.NET - Begin reading from DataReader before query is complete?

I\'m currently working on a program that is converting an old database to a newer style and one of the tasks I\'ve been assigned is to remove some old binary columns and convert those into documents i[详细]

2023-02-04 03:15 分类：问答
Reading a blob field from database using IDataRecord

I need to populate a byte array from a database field using an IDataRecord and i needed help on how to get this done.[详细]

2023-02-02 03:52 分类：问答
Export OracleDataReader to Excel in C#

I have a code like this, string ConnectionString = ConfigurationManager.ConnectionStrings[\"ora\"].ConnectionString;[详细]

2023-01-31 06:29 分类：问答
What would cause an OdbcDataReader to hang?

In my C# code I have an ODBC datareader that\'s the results of a call to a stored procedure with a parameter.[详细]

2023-01-31 05:48 分类：问答
Most efficient way to return AND USE a single row query from SQL Server?

I am using c# and SQL Server to get data from the d开发者_Go百科atabase and populate a few labels on a page on pageload. The information comes from a SQL view which returns a whole bunch of informatio[详细]

2023-01-27 13:44 分类：问答
Getting "Internal .Net Framework Data Provider error 30" error when column has NULL value

I have a simple .NET console program that uses OdbcDataReader to fetch rows from Advantage Local Server.[详细]

2023-01-24 23:18 分类：问答
Datareader vs Dataset

I\'m having a method that exports content from the database to excel file开发者_开发问答s. The method taks as paramaters a DataReader param and a int param - the number of rows.[详细]

2023-01-24 21:44 分类：问答
How to 'select' the current identity value for a table?

dbcc checki开发者_如何学Godent (MyTable, NORESEED) Will show the identity value in a message. I can\'t see the message as I need to select the identity value through a DataReader.[详细]

2023-01-22 14:44 分类：问答