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DataTableReader.GetInt64 Method

Note: This method is new in the .NET Framework version 2.0.

Gets the value of the specified column as a 64-bit signed integer.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

public override long GetInt64 (
	int ordinal
)
public long GetInt64 (
	int ordinal
)
public override function GetInt64 (
	ordinal : int
) : long

Parameters

ordinal

The zero-based column ordinal

Return Value

The value of the specified column.

Exception typeCondition

ArgumentOutOfRangeException

The index passed was outside the range of 0 to FieldCount - 1.

DeletedRowInaccessibleException

An attempt was made to retrieve data from a deleted row.

InvalidOperationException

An attempt was made to read or access a column in a closed DataTableReader .

InvalidCastException

The specified column does not contain a 64-bit signed integer value.

No conversions are performed; therefore, the data retrieved must already be an Int64 or coercible to an Int64.

Call IsDbNull to see if there are null values before calling this method.

The following example displays the contents of the column numbered 2 within the passed-in DataTableReader . If the value the column within a particular row is null, the code displays the text <NULL>. If the data within the column is not of the correct type, the example displays an error message for each row.

private static void PrintColumn(DataTableReader reader)
{
    // Loop through all the rows in the DataTableReader
    while (reader.Read())
    {
        if (reader.IsDBNull(2))
        {
            Console.Write("<NULL>");
        
        else
        {
            try
            {
                Console.Write(reader.GetInt64(2));
            
            catch (InvalidCastException)
            {
                Console.Write("Invalid data type.");
            
        
        Console.WriteLine();
    


Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

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