DynamicDataExtensions.FindDataSourceControl(Control) DynamicDataExtensions.FindDataSourceControl(Control) DynamicDataExtensions.FindDataSourceControl(Control) DynamicDataExtensions.FindDataSourceControl(Control) Method

Definición

Devuelve el origen de datos que está asociado al control de datos del control especificado.Returns the data source that is associated with the data control for the specified control.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Web::DynamicData::IDynamicDataSource ^ FindDataSourceControl(System::Web::UI::Control ^ current);
public static System.Web.DynamicData.IDynamicDataSource FindDataSourceControl (this System.Web.UI.Control current);
static member FindDataSourceControl : System.Web.UI.Control -> System.Web.DynamicData.IDynamicDataSource
<Extension()>
Public Function FindDataSourceControl (current As Control) As IDynamicDataSource

Parámetros

current
Control Control Control Control

Control que se encuentra en la jerarquía de un control enlazado a datos cuyo control contenedor se desea encontrar.A control inside the hierarchy of a data-bound control whose containing control you want to find.

Devoluciones

Origen de datos que está asociado al control de datos del control especificado.The data source that is associated with the data control for the specified control.

Ejemplos

El ejemplo siguiente muestra cómo buscar el control de origen de datos que contiene.The following example shows how to find the containing data source 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 FindDataSourceControl método se llama para buscar el control de origen de datos.The Insert.aspx file markup is changed to add an OnDataBound event handler named DetailsView1_DataBound, in which the FindDataSourceControl method is called to find the data source control.

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