DataGridTableStyle.ColumnHeadersVisible プロパティとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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DataGridTableStyle.ColumnHeadersVisible プロパティ

列ヘッダーを表示するかどうかを示す値を取得または設定します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Property ColumnHeadersVisible As
 Boolean

Visual Basic (使用法)

Dim instance As DataGridTableStyle
Dim value As Boolean

value = instance.ColumnHeadersVisible

instance.ColumnHeadersVisible = value

public bool ColumnHeadersVisible { get;
 set; }

C++

public:
property bool ColumnHeadersVisible {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_ColumnHeadersVisible ()

/** @property */
public void set_ColumnHeadersVisible (boolean
 value)

JScript

public function get ColumnHeadersVisible
 () : boolean

public function set ColumnHeadersVisible
 (value : boolean)

プロパティ値
列ヘッダーを表示する場合は true。それ以外の場合は false。既定値は true です。

解説

ヘッダーのキャプションテキストを設定するには、DataGridColumnStyle クラスの HeaderText プロパティを使用します。

使用例

Visual Basic

Private Sub DataGridTableStyle_Sample_Load(ByVal
 sender As Object, _
                           ByVal e As EventArgs)
 Handles MyBase.Load
   myDataGridTableStyle1 = New DataGridTableStyle()
   myHeaderLabel.Text = "Header Status :" + myDataGridTableStyle1.ColumnHeadersVisible.ToString()
   If myDataGridTableStyle1.ColumnHeadersVisible = True
 Then
      btnheader.Text = "Remove Header"
   Else
      btnheader.Text = "Add Header"
   End If
   AddCustomDataTableStyle()
End Sub 'DataGridTableStyle_Sample_Load

Private Sub AddCustomDataTableStyle()
   AddHandler myDataGridTableStyle1.ColumnHeadersVisibleChanged,
 AddressOf ColumnHeadersVisibleChanged_Handler

   ' Set ColumnheaderVisible property.
   myDataGridTableStyle1.MappingName = "Customers"

   ' Add a GridColumnStyle and set its MappingName
   Dim myBoolCol = New DataGridBoolColumn()
   myBoolCol.MappingName = "Current"
   myBoolCol.HeaderText = "IsCurrent Customer"
   myBoolCol.Width = 150
   myDataGridTableStyle1.GridColumnStyles.Add(myBoolCol)

   ' Add a second column style.
   Dim myTextCol = New DataGridTextBoxColumn()
   myTextCol.MappingName = "custName"
   myTextCol.HeaderText = "Customer Name"
   myTextCol.Width = 250
   myDataGridTableStyle1.GridColumnStyles.Add(myTextCol)

   ' Create new ColumnStyle objects
   Dim cOrderDate = New DataGridTextBoxColumn()
   cOrderDate.MappingName = "OrderDate"
   cOrderDate.HeaderText = "Order Date"
   cOrderDate.Width = 100

   ' PropertyDescriptor to create a formatted column.
   Dim myPropertyDescriptorCollection As PropertyDescriptorCollection
 = _
         Me.BindingContext(myDataSet, "Customers.custToOrders").GetItemProperties()

   ' Create a formatted column using a PropertyDescriptor.
   Dim csOrderAmount = New DataGridTextBoxColumn(myPropertyDescriptorCollection("OrderAmount"),
 "c", True)
   csOrderAmount.MappingName = "OrderAmount"
   csOrderAmount.HeaderText = "Total"
   csOrderAmount.Width = 100

   ' Add the DataGridTableStyle instances to GridTableStylesCollection.
   myDataGrid.TableStyles.Add(myDataGridTableStyle1)
End Sub 'AddCustomDataTableStyle

Private Sub ColumnHeadersVisibleChanged_Handler(ByVal
 sender As Object, ByVal
 e As EventArgs)
   myHeaderLabel.Text = "Header Status :" + myDataGridTableStyle1.ColumnHeadersVisible.ToString()
End Sub 'ColumnHeadersVisibleChanged_Handler

Private Sub btnheader_Click(ByVal
 sender As Object, ByVal
 e As EventArgs) Handles btnheader.Click
   If myDataGridTableStyle1.ColumnHeadersVisible = True
 Then
      myDataGridTableStyle1.ColumnHeadersVisible = False
      btnheader.Text = "Add Header"
   Else
      myDataGridTableStyle1.ColumnHeadersVisible = True
      btnheader.Text = "Remove Header"
   End If
End Sub 'btnheader_Click

 private void DataGridTableStyle_Sample_Load(object
 sender,
                                           EventArgs e)
 {
    myDataGridTableStyle1 = new DataGridTableStyle();
    myHeaderLabel.Text = "Header Status :" 
       + myDataGridTableStyle1.ColumnHeadersVisible.ToString();
    if(myDataGridTableStyle1.ColumnHeadersVisible == true)
    {
       btnheader.Text = "Remove Header";
    }
    else
    {
       btnheader.Text = "Add Header";
    }
    AddCustomDataTableStyle();
 } 
 private void AddCustomDataTableStyle()
 {           
    myDataGridTableStyle1.ColumnHeadersVisibleChanged 
       += new System.EventHandler(ColumnHeadersVisibleChanged_Handler);

    // Set ColumnheaderVisible property.         
    myDataGridTableStyle1.MappingName = "Customers";

    // Add a GridColumnStyle and set its MappingName 
    DataGridColumnStyle myBoolCol = new DataGridBoolColumn();
    myBoolCol.MappingName = "Current";
    myBoolCol.HeaderText = "IsCurrent Customer";
    myBoolCol.Width = 150;         
    myDataGridTableStyle1.GridColumnStyles.Add(myBoolCol);
 
    // Add a second column style.
    DataGridColumnStyle myTextCol = new DataGridTextBoxColumn();
    myTextCol.MappingName = "custName";
    myTextCol.HeaderText = "Customer Name";
    myTextCol.Width = 250;
    myDataGridTableStyle1.GridColumnStyles.Add(myTextCol);

    // Create new ColumnStyle objects
    DataGridColumnStyle cOrderDate = new DataGridTextBoxColumn();
    cOrderDate.MappingName = "OrderDate";
    cOrderDate.HeaderText = "Order Date";
    cOrderDate.Width = 100;

    // PropertyDescriptor to create a formatted column.
    PropertyDescriptorCollection myPropertyDescriptorCollection = this.BindingContext
       [myDataSet, "Customers.custToOrders"].GetItemProperties();
 
    // Create a formatted column using a PropertyDescriptor.       
  
    DataGridColumnStyle csOrderAmount = 
       new DataGridTextBoxColumn(myPropertyDescriptorCollection["OrderAmount"],
 "c", true);
    csOrderAmount.MappingName = "OrderAmount";
    csOrderAmount.HeaderText = "Total";
    csOrderAmount.Width = 100;

    // Add the DataGridTableStyle instances to GridTableStylesCollection.
    myDataGrid.TableStyles.Add(myDataGridTableStyle1);              
 }          
 private void ColumnHeadersVisibleChanged_Handler(object
 sender,
                                                       EventArgs e)
 {         
    myHeaderLabel.Text = "Header Status :" 
       + myDataGridTableStyle1.ColumnHeadersVisible.ToString();
 }      
 private void btnheader_Click(object sender,
 EventArgs e)
 {
    if(myDataGridTableStyle1.ColumnHeadersVisible == true)
    {            
       myDataGridTableStyle1.ColumnHeadersVisible = false;
       btnheader.Text = "Add Header";
    }
    else
    {
       myDataGridTableStyle1.ColumnHeadersVisible = true;
       btnheader.Text = "Remove Header";
    }         
}

C++

private:
   void DataGridTableStyle_Sample_Load( Object^ /*sender*/, EventArgs^
 /*e*/ )
   {
      myDataGridTableStyle1 = gcnew DataGridTableStyle;
      myHeaderLabel->Text = String::Concat( "Header Status : ", myDataGridTableStyle1->ColumnHeadersVisible
 );
      if ( myDataGridTableStyle1->ColumnHeadersVisible == true
 )
      {
         btnheader->Text = "Remove Header";
      }
      else
      {
         btnheader->Text = "Add Header";
      }

      AddCustomDataTableStyle();
   }

   void AddCustomDataTableStyle()
   {
      myDataGridTableStyle1->ColumnHeadersVisibleChanged += gcnew System::EventHandler(
 this, &DataGridTableStyle_Sample::ColumnHeadersVisibleChanged_Handler
 );

      // Set ColumnheaderVisible property.
      myDataGridTableStyle1->MappingName = "Customers";

      // Add a GridColumnStyle and set its MappingName
      DataGridColumnStyle^ myBoolCol = gcnew DataGridBoolColumn;
      myBoolCol->MappingName = "Current";
      myBoolCol->HeaderText = "IsCurrent Customer";
      myBoolCol->Width = 150;
      myDataGridTableStyle1->GridColumnStyles->Add( myBoolCol );

      // Add a second column style.
      DataGridColumnStyle^ myTextCol = gcnew DataGridTextBoxColumn;
      myTextCol->MappingName = "custName";
      myTextCol->HeaderText = "Customer Name";
      myTextCol->Width = 250;
      myDataGridTableStyle1->GridColumnStyles->Add( myTextCol );

      // Create new ColumnStyle objects
      DataGridColumnStyle^ cOrderDate = gcnew DataGridTextBoxColumn;
      cOrderDate->MappingName = "OrderDate";
      cOrderDate->HeaderText = "Order Date";
      cOrderDate->Width = 100;

      // PropertyDescriptor to create a formatted column.
      PropertyDescriptorCollection^ myPropertyDescriptorCollection =
         this->BindingContext[myDataSet, "Customers::custToOrders"]->GetItemProperties();

      // Create a formatted column using a PropertyDescriptor.
      DataGridColumnStyle^ csOrderAmount =
         gcnew DataGridTextBoxColumn( myPropertyDescriptorCollection[ "OrderAmount"
 ],"c",true );
      csOrderAmount->MappingName = "OrderAmount";
      csOrderAmount->HeaderText = "Total";
      csOrderAmount->Width = 100;

      // Add the DataGridTableStyle instances to GridTableStylesCollection.
      myDataGrid->TableStyles->Add( myDataGridTableStyle1 );
   }

   void ColumnHeadersVisibleChanged_Handler( Object^ /*sender*/,
 EventArgs^ /*e*/ )
   {
      myHeaderLabel->Text = String::Concat( "Header Status : ", myDataGridTableStyle1->ColumnHeadersVisible
 );
   }

   void btnheader_Click( Object^ /*sender*/, EventArgs^ /*e*/
 )
   {
      if ( myDataGridTableStyle1->ColumnHeadersVisible == true
 )
      {
         myDataGridTableStyle1->ColumnHeadersVisible = false;
         btnheader->Text = "Add Header";
      }
      else
      {
         myDataGridTableStyle1->ColumnHeadersVisible = true;
         btnheader->Text = "Remove Header";
      }
   }

private void DataGridTableStyleSampleLoad(Object
 sender, EventArgs e)
{
    myDataGridTableStyle1 = new DataGridTableStyle();
    myHeaderLabel.set_Text("Header Status :" 
        + System.Convert.ToString(myDataGridTableStyle1.
        get_ColumnHeadersVisible()));
    if (myDataGridTableStyle1.get_ColumnHeadersVisible() == true)
 {
        btnheader.set_Text("Remove Header");
    }
    else {
        btnheader.set_Text("Add Header");
    }

    AddCustomDataTableStyle();
} //DataGridTableStyleSampleLoad

private void AddCustomDataTableStyle()
{
    myDataGridTableStyle1.add_ColumnHeadersVisibleChanged(
        new System.EventHandler(ColumnHeadersVisibleChanged_Handler));

    // Set ColumnheaderVisible property.         
    myDataGridTableStyle1.set_MappingName("Customers");

    // Add a GridColumnStyle and set its MappingName 
    DataGridColumnStyle myBoolCol = new DataGridBoolColumn();

    myBoolCol.set_MappingName("Current");
    myBoolCol.set_HeaderText("IsCurrent Customer");
    myBoolCol.set_Width(150);
    myDataGridTableStyle1.get_GridColumnStyles().Add(myBoolCol);

    // Add a second column style.
    DataGridColumnStyle myTextCol = new DataGridTextBoxColumn();

    myTextCol.set_MappingName("custName");
    myTextCol.set_HeaderText("Customer Name");
    myTextCol.set_Width(250);
    myDataGridTableStyle1.get_GridColumnStyles().Add(myTextCol);

    // Create new ColumnStyle objects
    DataGridColumnStyle cOrderDate = new DataGridTextBoxColumn();

    cOrderDate.set_MappingName("OrderDate");
    cOrderDate.set_HeaderText("Order Date");
    cOrderDate.set_Width(100);

    // PropertyDescriptor to create a formatted column.
    PropertyDescriptorCollection myPropertyDescriptorCollection = 
        this.get_BindingContext().get_Item(myDataSet, 
        "Customers.custToOrders").GetItemProperties();

    // Create a formatted column using a PropertyDescriptor.       
  
    DataGridColumnStyle csOrderAmount = 
        new DataGridTextBoxColumn(myPropertyDescriptorCollection.
        get_Item("OrderAmount"), "c", true);

    csOrderAmount.set_MappingName("OrderAmount");
    csOrderAmount.set_HeaderText("Total");
    csOrderAmount.set_Width(100);

    // Add the DataGridTableStyle instances to GridTableStylesCollection.
    myDataGrid.get_TableStyles().Add(myDataGridTableStyle1);
} //AddCustomDataTableStyle

private void ColumnHeadersVisibleChanged_Handler(Object
 sender, 
    EventArgs e)
{
    myHeaderLabel.set_Text("Header Status :" 
        + ((System.Boolean)myDataGridTableStyle1.
        get_ColumnHeadersVisible()).ToString());
} //ColumnHeadersVisibleChanged_Handler

private void btnheader_Click(Object sender,
 EventArgs e)
{
    if (myDataGridTableStyle1.get_ColumnHeadersVisible() == true)
 {
        myDataGridTableStyle1.set_ColumnHeadersVisible(false);
        btnheader.set_Text("Add Header");
    }
    else {
        myDataGridTableStyle1.set_ColumnHeadersVisible(true);
        btnheader.set_Text("Remove Header");
    }
} //btnheader_Click

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
DataGridTableStyle クラス
DataGridTableStyle メンバ
System.Windows.Forms 名前空間
HeaderBackColor
HeaderForeColor
RowHeadersVisible
ColumnHeadersVisibleChanged
HeaderFont
DataGridColumnStyle.HeaderText プロパティ

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DataGridTableStyle.ColumnHeadersVisible プロパティとは？わかりやすく解説