DynamicDataExtensions.FindMetaTable(Control) DynamicDataExtensions.FindMetaTable(Control) DynamicDataExtensions.FindMetaTable(Control) DynamicDataExtensions.FindMetaTable(Control) Method

Definición

Devuelve el objeto de metatabla para el control de datos contenedor.Returns the metatable object for the containing data control.

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

Parámetros

current
Control Control Control Control

Control actual.The current control.

Devoluciones

Objeto de metatabla para el control de datos contenedor.The metatable object for the containing data control.

Ejemplos

El ejemplo siguiente muestra cómo buscar el MetaTable objeto para un control.The following example shows how to find the MetaTable object for a control. En el ejemplo, las plantillas de página dinámico de datos se copian en la carpeta \DynamicData\CustomPages\ProductDescriptions para ofrecer una visualización personalizada de la tabla ProductDescription de la base de datos AdventureWorksLT.In the example, the Dynamic Data page templates are copied to the \DynamicData\CustomPages\ProductDescriptions folder to provide a custom display for the ProductDescription table of the AdventureWorksLT database. El marcado del archivo Insert.aspx se cambia para agregar un OnDataBound controlador de eventos denominado DetailsView1_DataBound, en el que el FindMetaTable método se llama para buscar el MetaTable objeto.The Insert.aspx file markup is changed to add an OnDataBound event handler named DetailsView1_DataBound, in which the FindMetaTable method is called to find the MetaTable object.

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>

Se aplica a