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    • AutoCategorization Enumeration
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  • ReadDataFrame Method Overloads
    • ReadDataFrame Method (IDataReader, Int32)
    • ReadDataFrame Method (IDataReader, IEnumerable(String), Int32)
    • ReadDataFrame(R) Method (IDataReader, String, Int32, Boolean)
    • ReadDataFrame(R) Method (IDataReader, String, IEnumerable(String), Int32, Boolean)
  • ReadDataFrame Method (IDataReader, IEnumerable(String), Int32)

DataExtensionsReadDataFrame Method (IDataReader, IEnumerableString, Int32)

Extreme Optimization Numerical Libraries for .NET Professional
Reads the specified columns from a data reader and returns them as a data frame.

Namespace:  Extreme.Data
Assembly:  Extreme.Data (in Extreme.Data.dll) Version: 3.1.0
Syntax

C#
VB
C++
F#
Copy
public static DataFrame<long, string> ReadDataFrame(
	this IDataReader reader,
	IEnumerable<string> columnKeys,
	int capacity = 1000
)
<ExtensionAttribute>
Public Shared Function ReadDataFrame ( 
	reader As IDataReader,
	columnKeys As IEnumerable(Of String),
	Optional capacity As Integer = 1000
) As DataFrame(Of Long, String)
public:
[ExtensionAttribute]
static DataFrame<long long, String^>^ ReadDataFrame(
	IDataReader^ reader, 
	IEnumerable<String^>^ columnKeys, 
	int capacity = 1000
)
[<ExtensionAttribute>]
static member ReadDataFrame : 
        reader : IDataReader * 
        columnKeys : IEnumerable<string> * 
        ?capacity : int 
(* Defaults:
        let _capacity = defaultArg capacity 1000
*)
-> DataFrame<int64, string> 

Parameters

reader
Type: System.DataIDataReader
An IDataReader.
columnKeys
Type: System.Collections.GenericIEnumerableString
A sequence of column names.
capacity (Optional)
Type: SystemInt32
The initial capacity for the data frame.

Return Value

Type: DataFrameInt64, String
The data frame read from reader.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IDataReader. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Remarks

Optimal performance is achieved when capacity is equal to the number of rows in the data frame.

See Also

Reference

DataExtensions Class
ReadDataFrame Overload
Extreme.Data Namespace

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