DataCommand.Prepare Method
Prepares the specified command on the data source to be executed; the command may then be executed multiple times, with varying parameters.
Namespace: Microsoft.VisualStudio.Data
Assembly: Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)
Syntax
'Declaración
Public Overridable Function Prepare ( _
command As String, _
commandType As Integer, _
commandTimeout As Integer _
) As String
public virtual string Prepare(
string command,
int commandType,
int commandTimeout
)
public:
virtual String^ Prepare(
String^ command,
int commandType,
int commandTimeout
)
abstract Prepare :
command:string *
commandType:int *
commandTimeout:int -> string
override Prepare :
command:string *
commandType:int *
commandTimeout:int -> string
public function Prepare(
command : String,
commandType : int,
commandTimeout : int
) : String
Parameters
- command
Type: System.String
A command to execute that is specific to a data source.
- commandType
Type: System.Int32
The command type for the indicated command, specifying how to interpret the contents of the command parameter.
- commandTimeout
Type: System.Int32
The length of time, in seconds, to block the client before canceling the execution and returning to the caller. A value of 0 indicates infinite timeout; a value of -1 indicates a provider default.
Return Value
Type: System.String
Returns an identifier of the prepared command that can later be passed to the Execute or ExecuteWithoutResults methods using the command type Prepared.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | The command or asyncCommandEvents are null. |
| ArgumentException | The commandType specifies an invalid type. |
| ArgumentOutOfRangeException | The commandTimeout is less than -1. |
| NotSupportedException | The provider does not support this method. |
Remarks
Other exceptions that occur indicate that the parameter derivation failed for a provider-specified reason.
.NET Framework Security
- 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.