IDataObject.SetData 方法

参考

定义

命名空间:: System.Windows.Forms

程序集:: System.Windows.Forms.dll

重要

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存储此实例中的指定数据及其关联格式。

重载

SetData(Object)	使用此格式的数据类存储此实例中的指定数据。
SetData(String, Object)	存储此实例中的指定数据及其关联格式。
SetData(Type, Object)	存储此实例中的指定数据及其关联类类型。
SetData(String, Boolean, Object)	在该实例中存储指定的数据及其关联格式，同时使用一个布尔值指定数据能否转换成另一格式。

SetData(Object)

使用此格式的数据类存储此实例中的指定数据。

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

public void SetData (object data);

public void SetData (object? data);

abstract member SetData : obj -> unit

Public Sub SetData (data As Object)

参数

data: Object

要存储的数据。

示例

此示例使用 DataObject 实现 IDataObject的类来演示方法的使用 SetData 。首先，它会创建组件 (myComponent) ，并将其存储在数据对象 (myDataObject) 中。然后，它会检查指定的数据是否存储在数据对象中，并在消息框中显示结果。该示例假定你已创建一个 Form 命名 Form1的。

private:
   void SetData1()
   {
      // Creates a component to store in the data object.
      Component^ myComponent = gcnew Component;
      
      // Creates a data object.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Adds the component to the data object.
      myDataObject->SetData( myComponent );
      
      // Checks whether data of the specified type is in the data object.
      Type^ myType = myComponent->GetType();
      String^ myMessageText;
      if ( myDataObject->GetDataPresent( myType ) )
      {
         myMessageText = "Data of type " + myType->Name +
            " is present in the data object";
      }
      else
      {
         myMessageText = "Data of type " + myType->Name +
            " is not present in the data object";
      }
      
      // Displays the result in a message box.
      MessageBox::Show( myMessageText, "The Test Result" );
   }

private void SetData1() 
{
    // Creates a component to store in the data object.
    Component myComponent = new Component();
 
    // Creates a data object.
    DataObject myDataObject = new DataObject();

    // Adds the component to the data object.
    myDataObject.SetData(myComponent);
 
    // Checks whether data of the specified type is in the data object.
    Type myType = myComponent.GetType();
    string myMessageText;
    if(myDataObject.GetDataPresent(myType))
         myMessageText = "Data of type " + myType.Name + 
            " is present in the data object";
    else
        myMessageText = "Data of type " + myType.Name +
            " is not present in the data object";

    // Displays the result in a message box.
    MessageBox.Show(myMessageText, "The Test Result"); 
}

Private Sub SetData1()
   ' Creates a component to store in the data object.
   Dim myComponent As New System.ComponentModel.Component()
   
   ' Creates a data object.
   Dim myDataObject As New DataObject()
   
   ' Adds the component to the data object.
   myDataObject.SetData(myComponent)
   
   ' Checks whether data of the specified type is in the data object.
   Dim myType As Type = myComponent.GetType()
   Dim myMessageText As String
   If myDataObject.GetDataPresent(myType) Then
      myMessageText = "Data of type " + myType.Name + " is present in the data object"
   Else
      myMessageText = "Data of type " + myType.Name + " is not present in the data object"
   End If

   ' Displays the result in a message box.
   MessageBox.Show(myMessageText, "The Test Result")
End Sub

注解

格式派生自数据类。

检索时，可以使用此方法存储的数据转换为兼容格式。

有关此方法的实现，请参阅 DataObject.SetData。

另请参阅

适用于

SetData(String, Object)

存储此实例中的指定数据及其关联格式。

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

public void SetData (string format, object data);

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

abstract member SetData : string * obj -> unit

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

参数

format: String

与数据关联的格式。请参见 DataFormats 以获取预定义的格式。

data: Object

要存储的数据。

示例

此示例使用 DataObject 实现 IDataObject的类来演示方法的使用 SetData 。首先，它创建一个数据对象 (myDataObject) ，并将字符串存储在指定 UnicodeText 格式的对象中。然后，它会检索存储在指定 Text 格式的对象中的数据，以便将数据转换为格式 Text 。结果显示在消息框中。此示例假定你已创建一个 Form 命名 Form1的。

private:
   void SetData2()
   {
      // Creates a data object.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Stores a string, specifying the UnicodeText format.
      myDataObject->SetData( DataFormats::UnicodeText, "Hello World!" );
      
      // Retrieves the data by specifying the Text format.
      String^ myMessageText = "The data type is " +
         myDataObject->GetData( DataFormats::Text )->GetType()->Name;
      
      // Displays the result.
      MessageBox::Show( myMessageText, "The Test Result" );
   }

private void SetData2() 
{
    // Creates a data object.
    DataObject myDataObject = new DataObject();
 
    // Stores a string, specifying the UnicodeText format.
    myDataObject.SetData(DataFormats.UnicodeText, "Hello World!");
 
    // Retrieves the data by specifying the Text format.
    string myMessageText = "The data type is " + myDataObject.GetData(DataFormats.Text).GetType().Name;

    // Displays the result.
    MessageBox.Show(myMessageText, "The Test Result");
}

Private Sub SetData2()
   ' Creates a data object.
   Dim myDataObject As New DataObject()
   
   ' Stores a string, specifying the UnicodeText format.
   myDataObject.SetData(DataFormats.UnicodeText, "Hello World!")
   
   ' Retrieves the data by specifying the Text format.
   Dim myMessageText As String = "The data type is " & _
             myDataObject.GetData(DataFormats.Text).GetType().Name
   
   ' Displays the result.
   MessageBox.Show(myMessageText, "The Test Result")
End Sub

注解

如果不知道目标应用程序的格式，则可以使用此方法以多种格式存储数据。

检索时，可以使用此方法存储的数据转换为兼容格式。

有关此方法的实现，请参阅 DataObject.SetData。

另请参阅

适用于

SetData(Type, Object)

存储此实例中的指定数据及其关联类类型。

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

public void SetData (Type format, object data);

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

abstract member SetData : Type * obj -> unit

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

参数

format: Type

表示与数据关联的格式的 Type。请参见 DataFormats 以获取预定义的格式。

data: Object

要存储的数据。

示例

此示例使用 DataObject 实现 IDataObject的类来演示方法的使用 SetData 。首先，它创建组件 (myComponent) ，并将其存储在数据对象 (myDataObject) 中，用于 myType 指定数据格式。然后，它会检查指定类型的数据是否存储在对象中，并在消息框中显示结果。该示例假定你已创建一个 Form 命名 Form1的。

private:
   void SetData3()
   {
      // Creates a component.
      Component^ myComponent = gcnew Component;
      
      // Gets the type of the component.
      Type^ myType = myComponent->GetType();
      
      // Creates a data object.
      DataObject^ myDataObject = gcnew DataObject;
      
      // Stores the component in the data object.
      myDataObject->SetData( myType, myComponent );
      
      // Checks whether data of the specified type is in the data object.
      String^ myMessageText;
      if ( myDataObject->GetDataPresent( myType ) )
      {
         myMessageText = "Data of type " + myType->Name +
            " is stored in the data object";
      }
      else
      {
         myMessageText = "No data of type " + myType->Name +
            " is stored in the data object";
      }
      
      // Displays the result.
      MessageBox::Show( myMessageText, "The Test Result" );
   }

private void SetData3() 
{
    // Creates a component.
    Component myComponent = new Component();
 
    // Gets the type of the component.
    Type myType = myComponent.GetType();
 
    // Creates a data object.
    DataObject myDataObject = new DataObject();
 
    // Stores the component in the data object.
    myDataObject.SetData(myType, myComponent);
 
    // Checks whether data of the specified type is in the data object.
    string myMessageText;
    if(myDataObject.GetDataPresent(myType))
        myMessageText = "Data of type " + myType.Name + 
            " is stored in the data object";
    else
        myMessageText = "No data of type " + myType.Name +
            " is stored in the data object";
            
    // Displays the result.
    MessageBox.Show(myMessageText, "The Test Result");
}

Private Sub SetData3()
   ' Creates a component.
   Dim myComponent As New System.ComponentModel.Component()
   
   ' Gets the type of the component.
   Dim myType As Type = myComponent.GetType()
   
   ' Creates a data object.
   Dim myDataObject As New DataObject()
   
   ' Stores the component in the data object.
   myDataObject.SetData(myType, myComponent)
   
   ' Checks whether data of the specified type is in the data object.
   Dim myMessageText As String
   If myDataObject.GetDataPresent(myType) Then
      myMessageText = "Data of type " & myType.Name & " is stored in the data object"
   Else
      myMessageText = "No data of type " & myType.Name & " is stored in the data object"
   End If
   
   ' Displays the result.
   MessageBox.Show(myMessageText, "The Test Result")
End Sub

注解

如果不知道目标应用程序的格式，则可以使用此方法以多种格式存储数据。

检索时，可以使用此方法存储的数据转换为兼容格式。

有关此方法的实现，请参阅 DataObject.SetData。

另请参阅

适用于

SetData(String, Boolean, Object)

在该实例中存储指定的数据及其关联格式，同时使用一个布尔值指定数据能否转换成另一格式。

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

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

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

abstract member SetData : string * bool * obj -> unit

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

参数

format: String

与数据关联的格式。请参见 DataFormats 以获取预定义的格式。

autoConvert: Boolean

如果允许将数据转换成另一格式，值为 true；否则，值为 false。

data: Object

要存储的数据。

示例

此示例使用 DataObject 实现 IDataObject的类来演示方法的使用 SetData 。 First, it creates a data object (myDataObject) and stores a UnicodeText string in it, with the autoConvert parameter set to false. 然后，它会检索与对象中存储的数据关联的格式 () ，并在消息框中显示结果。与数据关联的唯一 UnicodeText 格式是格式。此示例假定你已创建一个 Form 命名 Form1的。

private:
   void SetData4()
   {
      // Creates a new data object.
      DataObject^ myDataObject = gcnew DataObject;

      // Adds UnicodeText string to the object, and set the autoConvert
      // parameter to false.
      myDataObject->SetData( DataFormats::UnicodeText, false, "My text String*" );

      // Gets the data format(s) in the data object.
      array<String^>^arrayOfFormats = myDataObject->GetFormats();

      // Stores the results in a string.
      String^ theResult = "The format(s) associated with the data are: \n";
      for ( int i = 0; i < arrayOfFormats->Length; i++ )
         theResult = theResult + arrayOfFormats[ i ], " \n";

      // Show the results in a message box.
      MessageBox::Show( theResult );
   }

       private void SetData4() 
       {
           // Creates a new data object.
           DataObject myDataObject = new DataObject();

           // Adds UnicodeText string to the object, and set the autoConvert 
           // parameter to false.
           myDataObject.SetData(DataFormats.UnicodeText, false, "My text string");

           // Gets the data format(s) in the data object.
           String[] arrayOfFormats = myDataObject.GetFormats();

           // Stores the results in a string.
           string theResult = "The format(s) associated with the data are:" + '\n';
           for(int i=0; i<arrayOfFormats.Length; i++)
               theResult += arrayOfFormats[i] + '\n';
           
           // Show the results in a message box. 
           MessageBox.Show(theResult);
       }

Private Sub SetData4()
    ' Creates a new data object.
    Dim myDataObject As New DataObject()

    ' Adds UnicodeText string to the object, and set the autoConvert
    ' parameter to false.
    myDataObject.SetData(DataFormats.UnicodeText, False, "My text string")

    ' Gets the data format(s) in the data object.
    Dim arrayOfFormats As [String]() = myDataObject.GetFormats()

    ' Stores the results in a string.
    Dim theResult As String = "The format(s) associated with the data are:" + _
            ControlChars.Cr
    Dim i As Integer
    For i = 0 To arrayOfFormats.Length - 1
        theResult += arrayOfFormats(i) + ControlChars.Cr
    Next i
    ' Show the results in a message box. 
    MessageBox.Show(theResult)
End Sub

注解

如果不知道目标应用程序的格式，则可以使用此方法以多种格式存储数据。

有关此方法的实现，请参阅 DataObject.SetData。

另请参阅

适用于

IDataObject.SetData 方法

定义

重载

SetData(Object)

参数

示例

注解

另请参阅

适用于

SetData(String, Object)

参数

示例

注解

另请参阅

适用于

SetData(Type, Object)

参数

示例

注解

另请参阅

适用于

SetData(String, Boolean, Object)

参数

示例

注解

另请参阅

适用于

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