LinkLabel.LinkCollection.IndexOf メソッド
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)

Dim instance As LinkCollection Dim link As Link Dim returnValue As Integer returnValue = instance.IndexOf(link)
戻り値
リンクがコレクション内に存在する場合はその項目の 0 から始まるインデックス番号。それ以外の場合は -1。

IndexOf メソッドを使用すると、リンクがコレクション内にあるかどうかを確認できます。このメソッドを呼び出す前にリンクがコレクション内にあるかどうかを確認するには、Contains メソッドを使用します。

LinkBehavior 列挙体を使用して LinkBehavior プロパティを設定するコード例を次に示します。またこの例では、ActiveLinkColor、LinkColor、Text、および LinkVisited の各プロパティを設定し、LinkLabel.LinkCollection にリンクを追加して、それにアクセスします。この例を実行するには、次のコードをフォームに貼り付けて、フォームのコンストラクタまたは Load のイベント ハンドラで InitializeLinkLabel を呼び出します。
' Declare the LinkLabel object. Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel ' Declare keywords array to identify links Dim keywords() As String Private Sub InitializeLinkLabel() Me.LinkLabel1 = New System.Windows.Forms.LinkLabel Me.LinkLabel1.Links.Clear() ' Set the location, name and size. Me.LinkLabel1.Location = New System.Drawing.Point(10, 20) Me.LinkLabel1.Name = "CompanyLinks" Me.LinkLabel1.Size = New System.Drawing.Size(104, 150) ' Set the LinkBehavior property to show underline when mouse ' hovers over the links. Me.LinkLabel1.LinkBehavior = _ System.Windows.Forms.LinkBehavior.HoverUnderline Dim textString As String = "For more information see our" & _ " company website or the research page at Contoso Ltd. " ' Set the text property. Me.LinkLabel1.Text = textString ' Set the color of the links to black, unless the mouse ' is hovering over a link. Me.LinkLabel1.LinkColor = System.Drawing.Color.Black Me.LinkLabel1.ActiveLinkColor = System.Drawing.Color.Blue ' Add links to the LinkCollection using starting index and ' length of keywords. keywords = New String() {"company", "research"} Dim keyword As String For Each keyword In keywords Me.LinkLabel1.Links.Add(textString.IndexOf(keyword), keyword.Length) Next ' Add the label to the form. Me.Controls.Add(Me.LinkLabel1) End Sub Private Sub LinkLabel1_LinkClicked(ByVal sender As Object, _ ByVal e As LinkLabelLinkClickedEventArgs) _ Handles LinkLabel1.LinkClicked Dim url As String ' Determine which link was clicked and set the appropriate url. Select Case LinkLabel1.Links.IndexOf(e.Link) Case 0 url = "www.microsoft.com" Case 1 url = "www.contoso.com/research" End Select ' Set the visited property to True. This will change ' the color of the link. e.Link.Visited = True ' Open Internet Explorer to the correct url. System.Diagnostics.Process.Start("IExplore.exe", url) End Sub
// Declare the LinkLabel object. internal System.Windows.Forms.LinkLabel LinkLabel1; // Declare keywords array to identify links string[] keywords; private void InitializeLinkLabel() { this.LinkLabel1 = new System.Windows.Forms.LinkLabel(); this.LinkLabel1.Links.Clear(); // Set the location, name and size. this.LinkLabel1.Location = new System.Drawing.Point(10, 20); this.LinkLabel1.Name = "CompanyLinks"; this.LinkLabel1.Size = new System.Drawing.Size(104, 150); // Set the LinkBehavior property to show underline when mouse // hovers over the links. this.LinkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; string textString = "For more information see our" + " company website or the research page at Contoso Ltd. "; // Set the text property. this.LinkLabel1.Text = textString; // Set the color of the links to black, unless the mouse // is hovering over a link. this.LinkLabel1.LinkColor = System.Drawing.Color.Black; this.LinkLabel1.ActiveLinkColor = System.Drawing.Color.Blue; // Associate the event-handling method with the LinkClicked // event. this.LinkLabel1.LinkClicked += new LinkLabelLinkClickedEventHandler(LinkLabel1_LinkClicked); // Add links to the LinkCollection using starting index and // length of keywords. keywords = new string[]{"company", "research"}; foreach ( string keyword in keywords ) { this.LinkLabel1.Links.Add(textString.IndexOf(keyword), keyword.Length); } // Add the label to the form. this.Controls.Add(this.LinkLabel1); } private void LinkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { string url = ""; // Determine which link was clicked and set the appropriate url. switch(LinkLabel1.Links.IndexOf(e.Link)) { case 0: url = "www.microsoft.com"; break; case 1: url = "www.contoso.com/research"; break; } // Set the visited property to True. This will change // the color of the link. e.Link.Visited = true; // Open Internet Explorer to the correct url. System.Diagnostics.Process.Start("IExplore.exe", url); }
// Declare the LinkLabel object. internal: System::Windows::Forms::LinkLabel^ LinkLabel1; // Declare keywords array to identify links array<String^>^keywords; private: void InitializeLinkLabel() { this->LinkLabel1 = gcnew System::Windows::Forms::LinkLabel; this->LinkLabel1->Links->Clear(); // Set the location, name and size. this->LinkLabel1->Location = System::Drawing::Point( 10, 20 ); this->LinkLabel1->Name = "CompanyLinks"; this->LinkLabel1->Size = System::Drawing::Size( 104, 150 ); // Set the LinkBehavior property to show underline when mouse // hovers over the links. this->LinkLabel1->LinkBehavior = System::Windows::Forms::LinkBehavior::HoverUnderline; String^ textString = "For more information see our" " company website or the research page at Contoso Ltd. "; // Set the text property. this->LinkLabel1->Text = textString; // Set the color of the links to black, unless the mouse // is hovering over a link. this->LinkLabel1->LinkColor = System::Drawing::Color::Black; this->LinkLabel1->ActiveLinkColor = System::Drawing::Color::Blue; // Associate the event-handling method with the LinkClicked // event. this->LinkLabel1->LinkClicked += gcnew LinkLabelLinkClickedEventHandler( this, &Form1::LinkLabel1_LinkClicked ); // Add links to the LinkCollection using starting index and // length of keywords. array<String^>^temp0 = {"company","research"}; keywords = temp0; System::Collections::IEnumerator^ myEnum = keywords->GetEnumerator(); while ( myEnum->MoveNext() ) { String^ keyword = safe_cast<String^>(myEnum->Current); this->LinkLabel1->Links->Add( textString->IndexOf( keyword ), keyword->Length ); } // Add the label to the form. this->Controls->Add( this->LinkLabel1 ); } void LinkLabel1_LinkClicked( Object^ /*sender*/, LinkLabelLinkClickedEventArgs^ e ) { String^ url = ""; // Determine which link was clicked and set the appropriate url. switch ( LinkLabel1->Links->IndexOf( e->Link ) ) { case 0: url = "www.microsoft.com"; break; case 1: url = "www.contoso.com/research"; break; } // Set the visited property to True. This will change // the color of the link. e->Link->Visited = true; // Open Internet Explorer to the correct url. System::Diagnostics::Process::Start( "IExplore.exe", url ); }
// Declare the LinkLabel object. private System.Windows.Forms.LinkLabel linkLabel1; // Declare keywords array to identify links private String keywords[]; private void InitializeLinkLabel() { this.linkLabel1 = new System.Windows.Forms.LinkLabel(); // Set the location, name and size. this.linkLabel1.set_Location(new System.Drawing.Point(10, 20)); this.linkLabel1.set_Name("CompanyLinks"); this.linkLabel1.set_Size(new System.Drawing.Size(104, 150)); // Set the LinkBehavior property to show underline when mouse // hovers over the links. this.linkLabel1.set_LinkBehavior( System.Windows.Forms.LinkBehavior.HoverUnderline); String textString = "For more information see our" + " company website or the research page at Contoso Ltd. "; // Set the text property. this.linkLabel1.set_Text(textString); // Set the color of the links to black, unless the mouse // is hovering over a link. this.linkLabel1.set_LinkColor(System.Drawing.Color.get_Black()); this.linkLabel1.set_ActiveLinkColor(System.Drawing.Color.get_Blue()); // Associate the event-handling method with the LinkClicked // event. this.linkLabel1.add_LinkClicked(new LinkLabelLinkClickedEventHandler( linkLabel1_LinkClicked)); // Add links to the LinkCollection using starting index and // length of keywords. keywords = new String[] { "company", "research" }; for (int iCtr = 0; iCtr < keywords.length; iCtr++) { String keyword = keywords[iCtr]; this.linkLabel1.get_Links().Add(textString.IndexOf(keyword), keyword.get_Length()); } // Add the label to the form. this.get_Controls().Add(this.linkLabel1); } //InitializeLinkLabel private void linkLabel1_LinkClicked(Object sender, LinkLabelLinkClickedEventArgs e) { String url = ""; // Determine which link was clicked and set the appropriate url. switch (linkLabel1.get_Links().IndexOf(e.get_Link())) { case 0: url = "www.microsoft.com"; break; case 1: url = "www.contoso.com/research"; break; } // Set the visited property to True. This will change // the color of the link. e.get_Link().set_Visited(true); // Open Internet Explorer to the correct url. System.Diagnostics.Process.Start("IExplore.exe", url); } //linkLabel1_LinkClicked

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
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