AdoDotNetConnectionSupport.ExecuteCore Method

Executes a specified command, optionally with parameters, and returns results as an IVsDataReader object.

Namespace:  Microsoft.VisualStudio.Data.Framework.AdoDotNet
Assembly:  Microsoft.VisualStudio.Data.Framework (in Microsoft.VisualStudio.Data.Framework.dll)

Syntax

'宣言
Protected Overridable Function ExecuteCore ( _
    command As String, _
    commandType As DataCommandType, _
    parameters As IVsDataParameter(), _
    commandTimeout As Integer _
) As IVsDataReader
'使用
Dim command As String
Dim commandType As DataCommandType
Dim parameters As IVsDataParameter()
Dim commandTimeout As Integer
Dim returnValue As IVsDataReader

returnValue = Me.ExecuteCore(command, _
    commandType, parameters, commandTimeout)

protected virtual IVsDataReader ExecuteCore(
    string command,
    DataCommandType commandType,
    IVsDataParameter[] parameters,
    int commandTimeout
)

protected:
virtual IVsDataReader^ ExecuteCore(
    String^ command, 
    DataCommandType commandType, 
    array<IVsDataParameter^>^ parameters, 
    int commandTimeout
)

protected function ExecuteCore(
    command : String, 
    commandType : DataCommandType, 
    parameters : IVsDataParameter[], 
    commandTimeout : int
) : IVsDataReader

Parameters

• command
  Type: System.String

  Command to execute that is specific to the data source.

• commandType
  Type: Microsoft.VisualStudio.Data.Services.SupportEntities.DataCommandType

  Type of the indicated command, specifying how to interpret the contents of the command parameter.

• parameters
  Type: []

  Array of DataParameter objects for the specified command type.

• commandTimeout
  Type: System.Int32

  Length of time, in seconds, to block the client before canceling the schema derivation and returning to the caller. A value of zero indicates infinite time-out; a value of -1 indicates a provider default.

Return Value

Type: Microsoft.VisualStudio.Data.Services.SupportEntities.IVsDataReader

An IVsDataReader object, which provides a forward-only, read-only stream from the data source.

Permissions

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

AdoDotNetConnectionSupport Class

AdoDotNetConnectionSupport Members

Microsoft.VisualStudio.Data.Framework.AdoDotNet Namespace