ListView.InsertItem Propriété

Référence

Définition

Espace de noms:: System.Web.UI.WebControls

Assembly:: System.Web.Extensions.dll

Important

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Obtient l'élément d'insertion dans un contrôle ListView.

public:
 virtual property System::Web::UI::WebControls::ListViewItem ^ InsertItem { System::Web::UI::WebControls::ListViewItem ^ get(); };

[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.ListViewItem InsertItem { get; }

[<System.ComponentModel.Browsable(false)>]
member this.InsertItem : System.Web.UI.WebControls.ListViewItem

Public Overridable ReadOnly Property InsertItem As ListViewItem

Valeur de propriété

ListViewItem

Objet représentant l'élément d'insertion d'un contrôle ListView.

Attributs: BrowsableAttribute

Exemples

L’exemple suivant montre comment obtenir l’élément d’insertion à l’aide de la InsertItem propriété pour accéder aux contrôles contenus dans le InsertItemTemplate modèle.

Important

Cet exemple contient des zones de texte qui acceptent l’entrée de l’utilisateur, ce qui constitue une menace potentielle pour la sécurité. Par défaut, les pages web ASP.NET vérifient que l’entrée d’utilisateur n’inclut pas de script ou d’éléments HTML. Pour plus d’informations, consultez Vue d’ensemble des attaques de script.

<%@ Page language="C#" %>
    
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
  
  protected void CountriesListView_ItemInserting(object sender, ListViewInsertEventArgs e)
  {
    // Get the controls that are contained in the insert item.
    TextBox countryCodeTextBox = 
      (TextBox)CountriesListView.InsertItem.FindControl("CountryCodeTextBox");
    TextBox nameTextBox = 
      (TextBox)CountriesListView.InsertItem.FindControl("NameTextBox");

    //Check if the controls are empty.
    if ((countryCodeTextBox.Text.Trim().Length == 0) ||
      (nameTextBox.Text.Trim().Length == 0))
    {
      MessageLabel.Text = 
        "The system could not insert the item. All fields are required.";
      e.Cancel = true;
      return;
    }
    
  }

  protected void Page_Load(object sender, EventArgs e)
  {
    //Clear the message label.
    MessageLabel.Text = "";
  }  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>ListView InsertItem Example</title>
    <style type="text/css">
      body  { font: 10pt Trebuchet MS, Arial, Tahoma; }
      th { background: #8FBC8F; }
      .item td { border: 1px solid #8FBC8F; }
      .insertItem td  { background: #D3D3D3; }
    </style>
  </head>
  <body>
    <form id="form1" runat="server">
       
      <h3>ListView InsertItem Example</h3>
      
      <asp:ListView ID="CountriesListView" 
        DataSourceID="CountryDataSource"
        DataKeyNames="CountryRegionCode"
        InsertItemPosition="LastItem"
        runat="server" 
        oniteminserting="CountriesListView_ItemInserting">
        <LayoutTemplate>
          <table cellpadding="4" width="500" runat="server" id="tblCountries">
            <tr runat="server">
              <th runat="server">Code</th>
              <th runat="server">Name</th>
            </tr>
            <tr runat="server" id="itemPlaceholder" />
          </table>
          <asp:DataPager ID="CountriesPager" runat="server" PageSize="20">
            <Fields>
              <asp:NumericPagerField ButtonCount="10" />
            </Fields>
          </asp:DataPager>          
        </LayoutTemplate>
        <ItemTemplate>
          <tr class="item" runat="server">
            <td>
              <asp:Label ID="CountryCodeLabel" runat="server" 
                Text='<%# Eval("CountryRegionCode")%>' />
            </td>          
            <td>
              <asp:Label ID="NameLabel" runat="server" 
                Text='<%# Eval("Name")%>' />
            </td>
          </tr>
        </ItemTemplate>
        <InsertItemTemplate>
          <tr class="insertItem">
            <td align="right">Code:</td>
            <td align="left">
              <asp:TextBox ID="CountryCodeTextBox" runat="server" 
                Text='<%# Bind("CountryRegionCode")%>' 
                MaxLength="3" />
            </td>
          </tr>
          <tr class="insertItem">
            <td align="right">Name:</td>
            <td align="left">
              <asp:TextBox ID="NameTextBox" runat="server" 
                Text='<%# Bind("Name")%>' 
                MaxLength="50" />
            </td>
          </tr>
          <tr class="insertItem" runat="server">
            <td colspan="2" align="center">
              <asp:Button ID="InsertButton" runat="server" 
                CommandName="Insert" Text="Insert" />
              <asp:Button ID="CancelButton" runat="server" 
                CommandName="Cancel" Text="Clear" />
            </td>
          </tr>
        </InsertItemTemplate>
      </asp:ListView>
      <br /><br />
                
      <asp:Label ID="MessageLabel"
        ForeColor="Red"
        runat="server" />

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->      
      <asp:SqlDataSource ID="CountryDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [CountryRegionCode], [Name]
          FROM [Person].[CountryRegion]"
        InsertCommand="INSERT INTO Person.CountryRegion(CountryRegionCode, Name) 
          VALUES (@CountryRegionCode, @Name)">
      </asp:SqlDataSource>
      
    </form>
  </body>
</html>

<%@ Page language="VB" %>
    
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  Protected Sub CountriesListView_ItemInserting(ByVal sender As Object, _
                                                ByVal e As ListViewInsertEventArgs)
    
    ' Get the controls that are contained in the insert item.
    Dim countryCodeTextBox As TextBox = _
      CType(CountriesListView.InsertItem.FindControl("CountryCodeTextBox"), TextBox)
    Dim nameTextBox As TextBox = _
      CType(CountriesListView.InsertItem.FindControl("NameTextBox"), TextBox)
    
    'Check if the controls are empty.
    If countryCodeTextBox.Text.Trim().Length = 0 _
    OrElse nameTextBox.Text.Trim().Length = 0 Then
      MessageLabel.Text = "The system could not insert the item. All fields are required."
      e.Cancel = True
      Return
    End If

  End Sub
 
  Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) 
    'Clear the message label.
    MessageLabel.Text = ""
  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>ListView InsertItem Example</title>
    <style type="text/css">
      body  { font: 10pt Trebuchet MS, Arial, Tahoma; }
      th { background: #8FBC8F; }
      .item td { border: 1px solid #8FBC8F; }
      .insertItem td  { background: #D3D3D3; }
    </style>
  </head>
  <body>
    <form id="form1" runat="server">
       
      <h3>ListView InsertItem Example</h3>
      
      <asp:ListView ID="CountriesListView" 
        DataSourceID="CountryDataSource"
        DataKeyNames="CountryRegionCode"
        InsertItemPosition="LastItem"
        runat="server" 
        oniteminserting="CountriesListView_ItemInserting">
        <LayoutTemplate>
          <table cellpadding="4" width="500" runat="server" id="tblCountries">
            <tr runat="server">
              <th runat="server">Code</th>
              <th runat="server">Name</th>
            </tr>
            <tr runat="server" id="itemPlaceholder" />
          </table>
          <asp:DataPager ID="CountriesPager" runat="server" PageSize="20">
            <Fields>
              <asp:NumericPagerField ButtonCount="10" />
            </Fields>
          </asp:DataPager>          
        </LayoutTemplate>
        <ItemTemplate>
          <tr class="item" runat="server">
            <td>
              <asp:Label ID="CountryCodeLabel" runat="server" 
                Text='<%# Eval("CountryRegionCode")%>' />
            </td>          
            <td>
              <asp:Label ID="NameLabel" runat="server" 
                Text='<%# Eval("Name")%>' />
            </td>
          </tr>
        </ItemTemplate>
        <InsertItemTemplate>
          <tr class="insertItem">
            <td align="right">Code:</td>
            <td align="left">
              <asp:TextBox ID="CountryCodeTextBox" runat="server" 
                Text='<%# Bind("CountryRegionCode")%>' 
                MaxLength="3" />
            </td>
          </tr>
          <tr class="insertItem">
            <td align="right">Name:</td>
            <td align="left">
              <asp:TextBox ID="NameTextBox" runat="server" 
                Text='<%# Bind("Name")%>' 
                MaxLength="50" />
            </td>
          </tr>
          <tr class="insertItem" runat="server">
            <td colspan="2" align="center">
              <asp:Button ID="InsertButton" runat="server" 
                CommandName="Insert" Text="Insert" />
              <asp:Button ID="CancelButton" runat="server" 
                CommandName="Cancel" Text="Clear" />
            </td>
          </tr>
        </InsertItemTemplate>
      </asp:ListView>
      <br /><br />
                
      <asp:Label ID="MessageLabel"
        ForeColor="Red"
        runat="server" />

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->      
      <asp:SqlDataSource ID="CountryDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [CountryRegionCode], [Name]
          FROM [Person].[CountryRegion]"
        InsertCommand="INSERT INTO Person.CountryRegion(CountryRegionCode, Name) 
          VALUES (@CountryRegionCode, @Name)">
      </asp:SqlDataSource>
      
    </form>
  </body>
</html>

Remarques

Utilisez la InsertItem propriété pour accéder à l’élément d’insertion d’un ListView contrôle. Un élément d’insertion est un ListViewItem objet dont ItemType est égal à ListViewItemType.InsertItem. Le contenu d’un élément d’insertion est défini par la InsertItemTemplate propriété .

S’applique à

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