datareader_开发者

How would you know if "DataTable.Load()" finished loading?

How would you know if all result data are loaded in the DataTable when you use DataTable.Load? Or rather, how would we know if the DataReader has finished loading the data?[详细]

2023-04-05 01:53 分类：问答

Problem in reading data from multiple tables [duplicate]

This question already has answers he开发者_StackOverflow社区re: Closed 11 years ago. Possible Duplicate:[详细]

2023-04-04 04:05 分类：问答

DataReader within a DataReader

I have a DataReader...I use the result of the DataReader as开发者_Go百科 parameter on another DataReader that is connected to a command with a Stored Procedure type. It works fast for now but I worry[详细]

2023-04-01 21:57 分类：问答

How to prevent OleDbDataReader.ExecuteReader from auto-appending integers to duplicate column values

I\'m trying to import data from an Excel (xls) spreadsheet. I need to throw an error if duplicate values appear in the header row. I\'m using an OleDbDataReader to ingest the worksheet data. The probl[详细]

2023-04-01 20:27 分类：问答

Strange NullReferenceException on ExecuteReader

when I try to execute the folowing code, a NullReferenceException is raised on the ExecuteReader: static public IDataReader executeReader(string query, string connectionString, string databaseType)[详细]

2023-03-26 10:50 分类：问答

IDataReader - Any way to get the total rows?

Is there any way to get the total number of rows returned from a开发者_如何学编程 SQL query (from the IDataReader) before iterating through the rows by using reader.Read();?No.[详细]

2023-03-21 16:00 分类：问答

Java XML Reader error

I get an error when i run the beginning of my XML reader: public static void main(String[] args) { System.out.println(\"XML Reader\");[详细]

2023-03-19 13:59 分类：问答

Using DataReader in VB.NET

I got the error message There is an open data reader associated with this command which needs to be closed first by using the following code:[详细]

2023-03-18 12:31 分类：问答

ASP.NET: What is DataReader return type if my sql data type is float?

My SQL data of column Price is of type float. When I use DataReader to read in a row and try to access the column value as[详细]

2023-03-13 05:57 分类：问答

which is better, closing a datareader or setting it to null?

I would like to know the advantage and disadvantage of the following operation shall i bet开发者_JAVA百科ter set the datareader to null than calling the close method. If this is good what are the adv[详细]

2023-03-12 22:42 分类：问答