DynamicDataExtensions.FindDataSourceControl(Control) Methode

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

Parameters

Retouren

De gegevensbron die is gekoppeld aan het gegevensbeheer voor het opgegeven besturingselement.

Voorbeelden

In het volgende voorbeeld ziet u hoe u het besturingselement met gegevensbronnen kunt vinden. In het voorbeeld worden de paginasjablonen voor dynamische gegevens gekopieerd naar de map \DynamicData\CustomPages\ProductDescriptions om een aangepaste weergave te bieden voor de tabel ProductDescription van de AdventureWorksLT-database. De Insert.aspx bestandsmarkeringen worden gewijzigd om een OnDataBound gebeurtenishandler met de naam DetailsView1_DataBoundtoe te voegen, waarin de FindDataSourceControl methode wordt aangeroepen om het besturingselement voor de gegevensbron te vinden.

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)
            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>