Load(Stream) Method (DeviceCapabilityCollection)

In This Topic

Loads current values of capabilities from the stream.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration

Public Sub Load( _
   ByVal streamStream with current values of capabilites.
 As System.IO.Stream _
)

public void Load(
   System.IO.Stream stream
)

public: void Load(
   System.IO.Stream* stream
)

public:
void Load(
   System.IO.Stream^ stream
)

Parameters

stream: Stream with current values of capabilites.

Exceptions

Exception	Description
System.ArgumentNullException	Thrown if stream is null (Nothing in VB).
System.ArgumentException	Thrown if stream does not support reading.
TwainInvalidStateException	Thrown if device is in wrong state.
TwainDeviceCapabilityException	Thrown if device does not support capability.
DebuggerException	Thrown if the .NET debugger is used and the function evaluation requires all threads to run.

Example

This C#/VB.NET code shows how to load previously saved values of device capabilities.

VB.NET


''' <summary>
''' Loads the device capability collection from file.
''' </summary>
''' <param name="device"></param>
Public Shared Sub LoadDeviceCapabilityCollection(device As Vintasoft.Twain.Device)
        ' open the device
        device.Open()
        ' open file
        Using fs As New System.IO.FileStream("scanner-capabilities.xml", System.IO.FileMode.Open, System.IO.FileAccess.Read)
                ' load the device capability collection from file
                device.Capabilities.Load(fs)
        End Using
End Sub


/// <summary>
/// Loads the device capability collection from file.
/// </summary>
/// <param name="device"></param>
public static void LoadDeviceCapabilityCollection(Vintasoft.Twain.Device device)
{
    // open the device
    device.Open();
    // open file
    using (System.IO.FileStream fs = new System.IO.FileStream("scanner-capabilities.xml", System.IO.FileMode.Open, System.IO.FileAccess.Read))
    {
        // load the device capability collection from file
        device.Capabilities.Load(fs);
    }
}

Requirements

Target Platforms: .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

DeviceCapabilityCollection Class
DeviceCapabilityCollection Members

Save(Stream)

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