DynamicDataExtensions.FindMetaTable(Control) Método

public:
[System::Runtime::CompilerServices::Extension]
 static System::Web::DynamicData::MetaTable ^ FindMetaTable(System::Web::UI::Control ^ current);

public static System.Web.DynamicData.MetaTable FindMetaTable (this System.Web.UI.Control current);

static member FindMetaTable : System.Web.UI.Control -> System.Web.DynamicData.MetaTable

<Extension()>
Public Function FindMetaTable (current As Control) As MetaTable

Parâmetros

Retornos

MetaTable

O objeto metatable para o controle que contém dados.

Exemplos

O exemplo a seguir mostra como localizar o MetaTable objeto para um controle. No exemplo, os modelos de página dados dinâmicos são copiados para a pasta \DynamicData\CustomPages\ProductDescriptions para fornecer uma exibição personalizada para a tabela ProductDescription do banco de dados AdventureWorksLT. A marcação de arquivo Insert.aspx é alterada para adicionar um OnDataBound manipulador de eventos chamado DetailsView1_DataBound, no qual o FindMetaTable método é chamado para localizar o MetaTable objeto.

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml.Linq;
using System.Web.DynamicData;

public partial class Insert : System.Web.UI.Page {
    protected MetaTable table;

    protected void Page_Init(object sender, EventArgs e) {
        DynamicDataManager1.RegisterControl(DetailsView1);
    }

    protected void Page_Load(object sender, EventArgs e) {
        table = DetailsDataSource.GetTable();
        Title = table.DisplayName;
    }

    protected void DetailsView1_DataBound(object sender, EventArgs e) {

        var dsc = DetailsView1.FindDataSourceControl() as LinqDataSource;
        if (dsc == null || dsc.EnableInsert != true)
            return;

        var mTbl = DetailsView1.FindMetaTable() as MetaTable;
        if (mTbl != null)
            LblMetaTbl.Text = "Column count = " + mTbl.Columns.Count.ToString();

        var fldTmpUsrCtl = DetailsView1.FindFieldTemplate("Description") as FieldTemplateUserControl;
        if (fldTmpUsrCtl != null) {
            var entryFldDescript = fldTmpUsrCtl.DataControl as TextBox;
            entryFldDescript.Text = "(Enter short Description here.)";
        }

        var fldTmpUsrCtl2 = DetailsView1.FindFieldTemplate("ModifiedDate") as FieldTemplateUserControl;
        if (fldTmpUsrCtl2 != null) {
            var entryFldModDate = fldTmpUsrCtl2.DataControl as TextBox;
            entryFldModDate.Text = System.DateTime.Now.Date.ToShortDateString();
        }
    }

    protected void DetailsView1_ItemCommand(object sender, DetailsViewCommandEventArgs e) {
        if (e.CommandName == DataControlCommands.CancelCommandName) {
            Response.Redirect(table.ListActionPath);
        }
    }

    protected void DetailsView1_ItemInserted(object sender, DetailsViewInsertedEventArgs e) {
        if (e.Exception == null) {
            Response.Redirect(table.ListActionPath);
        }
    }
}

<%@ Page Language="C#" MasterPageFile="~/Site.master" CodeFile="Insert.aspx.cs" Inherits="Insert" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:DynamicDataManager ID="DynamicDataManager1" runat="server" AutoLoadForeignKeys="true" />

    <h2> DynamicData\CustomPages\ProductDescriptions\Insert.aspx <%= table.DisplayName %></h2>
    <p>   <asp:Label ID="LblMetaTbl" runat="server" Text="Label"></asp:Label>   </p>

    <asp:ScriptManagerProxy runat="server" ID="ScriptManagerProxy1" />

    <asp:ValidationSummary ID="ValidationSummary1" runat="server" EnableClientScript="true"
        HeaderText="List of validation errors" />
    <asp:DynamicValidator runat="server" ID="DetailsViewValidator" ControlToValidate="DetailsView1" Display="None" />

    <asp:DetailsView ID="DetailsView1" runat="server" DataSourceID="DetailsDataSource" DefaultMode="Insert"
        AutoGenerateInsertButton="True" OnItemCommand="DetailsView1_ItemCommand" OnItemInserted="DetailsView1_ItemInserted"
        CssClass="detailstable" FieldHeaderStyle-CssClass="bold"
        OnDataBound="DetailsView1_DataBound">
    </asp:DetailsView>

    <asp:LinqDataSource ID="DetailsDataSource" runat="server" EnableInsert="true">
    </asp:LinqDataSource>
</asp:Content>

Aplica-se a