DataObject.SetData Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Adds an object to the DataObject.

Overloads

SetData(Object)	Adds the specified object to the DataObject using the object type as the data format.
SetData(String, Object)	Adds the specified object to the DataObject using the specified format.
SetData(Type, Object)	Adds the specified object to the DataObject using the specified type as the format.
SetData(String, Boolean, Object)	Adds the specified object to the DataObject using the specified format and indicating whether the data can be converted to another format.

SetData(Object)

Adds the specified object to the DataObject using the object type as the data format.

public:
 virtual void SetData(System::Object ^ data);

public virtual void SetData (object? data);

abstract member SetData : obj -> unit
override this.SetData : obj -> unit

Public Overridable Sub SetData (data As Object)

Parameters

data

Object

The data to store.

Implements

SetData(Object)

Examples

The following code example stores data in a DataObject. First, a new DataObject is created and a component is stored in it. Then, the data is retrieved by specifying the class. The result is displayed in a text box.

This code requires that textBox1 has been created.

private:
   void AddMyData3()
   {
      // Creates a component to store in the data object.
      Component^ myComponent = gcnew Component;
      
      // Creates a new data object.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Adds the component to the DataObject.
      myDataObject->SetData( myComponent );
      
      // Prints whether data of the specified type is in the DataObject.
      Type^ myType = myComponent->GetType();
      if ( myDataObject->GetDataPresent( myType ) )
      {
         textBox1->Text = String::Concat( "Data of type ", myType->Name,
           " is present in the DataObject" );
      }
      else
      {
         textBox1->Text = String::Concat( "Data of type ", myType->Name,
           " is not present in the DataObject" );
      }
   }

private void AddMyData3() {
    // Creates a component to store in the data object.
    Component myComponent = new Component();
 
    // Creates a new data object.
    DataObject myDataObject = new DataObject();
 
    // Adds the component to the DataObject.
    myDataObject.SetData(myComponent);
 
    // Prints whether data of the specified type is in the DataObject.
    Type myType = myComponent.GetType();
    if(myDataObject.GetDataPresent(myType))
       textBox1.Text = "Data of type " + myType.GetType().Name + 
       " is present in the DataObject";
    else
       textBox1.Text = "Data of type " + myType.GetType().Name +
       " is not present in the DataObject";
 }

Private Sub AddMyData3()
    ' Creates a component to store in the data object.
    Dim myComponent As New Component()
    
    ' Creates a new data object.
    Dim myDataObject As New DataObject()
    
    ' Adds the component to the DataObject.
    myDataObject.SetData(myComponent)
    
    ' Prints whether data of the specified type is in the DataObject.
    Dim myType As Type = myComponent.GetType()
    If myDataObject.GetDataPresent(myType) Then
        textBox1.Text = "Data of type " & myType.GetType().Name & _
            " is present in the DataObject"
    Else
        textBox1.Text = "Data of type " & myType.GetType().Name & _
            " is not present in the DataObject"
    End If
End Sub

Remarks

Important

Calling this method with untrusted data is a security risk. Call this method only with trusted data. For more information, see Validate All Inputs.

If you do not know the format of the target application, you can store data in multiple formats using this method. Data stored using this method can be converted to a compatible format when it is retrieved.

The SetData(Object) overload stores the data value in a format that it determines by calling the Object.GetType method. If data implements the ISerializable interface, this overload also stores the value in the Serializable format.

See also

• GetDataPresent(Type)
• GetData(String, Boolean)
• GetFormats(Boolean)
• System.Runtime.Serialization

SetData(String, Object)

Adds the specified object to the DataObject using the specified format.

public:
 virtual void SetData(System::String ^ format, System::Object ^ data);

public virtual void SetData (string format, object? data);

abstract member SetData : string * obj -> unit
override this.SetData : string * obj -> unit

Public Overridable Sub SetData (format As String, data As Object)

Parameters

format

String

The format associated with the data. See DataFormats for predefined formats.

data

Object

The data to store.

Implements

SetData(String, Object)

Examples

The following code example stores data in a DataObject, specifying its format as Unicode.

Then the data is retrieved by specifying the text format, since the default is to convert the data when the final format is compatible. The result is displayed in a text box.

This code requires that textBox1 has been created.

private:
   void AddMyData()
   {
      // Creates a new data object using a string and the text format.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Stores a string, specifying the Unicode format.
      myDataObject->SetData( DataFormats::UnicodeText, "Text string" );
      
      // Retrieves the data by specifying Text.
      textBox1->Text = myDataObject->GetData( DataFormats::Text )->GetType()->Name;
   }

private void AddMyData() {
    // Creates a new data object using a string and the text format.
    DataObject myDataObject = new DataObject();
 
    // Stores a string, specifying the Unicode format.
    myDataObject.SetData(DataFormats.UnicodeText, "Text string");
 
    // Retrieves the data by specifying Text.
    textBox1.Text = myDataObject.GetData(DataFormats.Text).GetType().Name;
 }

Private Sub AddMyData()
    ' Creates a new data object using a string and the text format.
    Dim myDataObject As New DataObject()
    
    ' Stores a string, specifying the Unicode format.
    myDataObject.SetData(DataFormats.UnicodeText, "Text string")
    
    ' Retrieves the data by specifying Text.
    textBox1.Text = myDataObject.GetData(DataFormats.Text).GetType().Name
End Sub

Remarks

Important

Calling this method with untrusted data is a security risk. Call this method only with trusted data. For more information, see Validate All Inputs.

If you do not know the format of the target application, you can store data in multiple formats using this method.

Data stored using this method can be converted to a compatible format when it is retrieved.

See also

• GetData(String, Boolean)
• GetDataPresent(Type)
• GetFormats(Boolean)
• DataFormats

SetData(Type, Object)

Adds the specified object to the DataObject using the specified type as the format.

public:
 virtual void SetData(Type ^ format, System::Object ^ data);

public virtual void SetData (Type format, object? data);

abstract member SetData : Type * obj -> unit
override this.SetData : Type * obj -> unit

Public Overridable Sub SetData (format As Type, data As Object)

Parameters

format

Type

A Type representing the format associated with the data.

data

Object

The data to store.

Implements

SetData(Type, Object)

Examples

The following code example stores data in a DataObject using a Type as the data format. The data is then retrieved by calling GetData using the Type to specify the data format. The result is displayed in a text box.

This code requires that textBox1 has been created.

private:
   void AddMyData2()
   {
      // Creates a component to store in the data object.
      Component^ myComponent = gcnew Component;
      
      // Gets the type of the component.
      Type^ myType = myComponent->GetType();
      
      // Creates a new data object.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Adds the component to the DataObject.
      myDataObject->SetData( myType, myComponent );
      
      // Prints whether data of the specified type is in the DataObject.
      if ( myDataObject->GetDataPresent( myType ) )
      {
         textBox1->Text = String::Concat( "Data of type ", myType->Name,
            " is present in the DataObject" );
      }
      else
      {
         textBox1->Text = String::Concat( "Data of type ", myType->Name,
           " is not present in the DataObject" );
      }
   }

private void AddMyData2() {
    // Creates a component to store in the data object.
    Component myComponent = new Component();
 
    // Gets the type of the component.
    Type myType = myComponent.GetType();
 
    // Creates a new data object.
    DataObject myDataObject = new DataObject();
 
    // Adds the component to the DataObject.
    myDataObject.SetData(myType, myComponent);
 
    // Prints whether data of the specified type is in the DataObject.
    if(myDataObject.GetDataPresent(myType))
       textBox1.Text = "Data of type " + myType.GetType().Name + 
       " is present in the DataObject";
    else
       textBox1.Text = "Data of type " + myType.GetType().Name +
       " is not present in the DataObject";
 }

Private Sub AddMyData2()
    ' Creates a component to store in the data object.
    Dim myComponent As New Component()
    
    ' Gets the type of the component.
    Dim myType As Type = myComponent.GetType()
    
    ' Creates a new data object.
    Dim myDataObject As New DataObject()
    
    ' Adds the component to the DataObject.
    myDataObject.SetData(myType, myComponent)
    
    ' Prints whether data of the specified type is in the DataObject.
    If myDataObject.GetDataPresent(myType) Then
        textBox1.Text = "Data of type " & myType.GetType().Name & _
            " is present in the DataObject"
    Else
        textBox1.Text = "Data of type " & myType.GetType().Name & _
            " is not present in the DataObject"
    End If
End Sub

Remarks

Important

Calling this method with untrusted data is a security risk. Call this method only with trusted data. For more information, see Validate All Inputs.

If you do not know the format of the target application, you can store data in multiple formats using this method.

Data stored using this method can be converted to a compatible format when it is retrieved.

See also

• GetDataPresent(Type)
• GetData(String, Boolean)
• DataFormats
• GetFormats(Boolean)
• Type

SetData(String, Boolean, Object)

Adds the specified object to the DataObject using the specified format and indicating whether the data can be converted to another format.

public:
 virtual void SetData(System::String ^ format, bool autoConvert, System::Object ^ data);

public virtual void SetData (string format, bool autoConvert, object? data);

abstract member SetData : string * bool * obj -> unit
override this.SetData : string * bool * obj -> unit

Public Overridable Sub SetData (format As String, autoConvert As Boolean, data As Object)

Parameters

format

String

The format associated with the data. See DataFormats for predefined formats.

autoConvert

Boolean

true to allow the data to be converted to another format; otherwise, false.

data

Object

The data to store.

Implements

SetData(String, Boolean, Object)

Examples

The following code example stores data in a DataObject and specifies that the data can only be retrieved in its native format.

First, a new DataObject is created. Data in the Unicode format is stored in the DataObject, with autoConvert set to false.

Then, the DataObject is queried for the list of available data formats. Only the Unicode format is returned, although Unicode data can be converted to text and other formats.

This code requires that textBox1 has been created.

private:
   void AddMyData4()
   {
      // Creates a new data object, and assigns it the component.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Adds data to the DataObject, and specifies no format conversion.
      myDataObject->SetData( DataFormats::UnicodeText, false, "My Unicode data" );
      
      // Gets the data formats in the DataObject.
      array<String^>^ arrayOfFormats = myDataObject->GetFormats();
      
      // Prints the results.
      textBox1->Text = "The format(s) associated with the data are: \n";
      for ( int i = 0; i < arrayOfFormats->Length; i++ )
      {
         textBox1->Text = String::Concat( textBox1->Text, arrayOfFormats[ i ], "\n" );
      }
   }

private void AddMyData4() {
    // Creates a new data object, and assigns it the component.
    DataObject myDataObject = new DataObject();
 
    // Adds data to the DataObject, and specifies no format conversion.
    myDataObject.SetData(DataFormats.UnicodeText, false, "My Unicode data");
 
    // Gets the data formats in the DataObject.
    String[] arrayOfFormats = myDataObject.GetFormats();
 
    // Prints the results.
    textBox1.Text = "The format(s) associated with the data are: " + '\n';
    for(int i=0; i<arrayOfFormats.Length; i++)
       textBox1.Text += arrayOfFormats[i] + '\n';
 }

Private Sub AddMyData4()
    ' Creates a new data object, and assigns it the component.
    Dim myDataObject As New DataObject()
    
    ' Adds data to the DataObject, and specifies no format conversion.
    myDataObject.SetData(DataFormats.UnicodeText, False, "My Unicode data")
    
    ' Gets the data formats in the DataObject.
    Dim arrayOfFormats As String() = myDataObject.GetFormats()
    
    ' Prints the results.
    textBox1.Text = "The format(s) associated with the data are: " & ControlChars.Cr
    Dim i As Integer
    For i = 0 To arrayOfFormats.Length - 1
        textBox1.Text += arrayOfFormats(i) & ControlChars.Cr
    Next i
End Sub

Remarks

Important

Calling this method with untrusted data is a security risk. Call this method only with trusted data. For more information, see Validate All Inputs.

If you do not know the format of the target application, you can store data in multiple formats using this method.

See also

• GetData(String, Boolean)
• GetDataPresent(Type)
• GetFormats(Boolean)
• DataFormats