DynamicDataExtensions.FindDataSourceControl(Control) 方法

定義

傳回與指定之控制項的資料控制項相關聯的資料來源。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

參數

current
Control

資料繫結控制項階層架構內的控制項,其中含有要尋找的控制項。A control inside the hierarchy of a data-bound control whose containing control you want to find.

傳回

與指定之控制項的資料控制項相關聯的資料來源。The data source that is associated with the data control for the specified control.

範例

下列範例顯示如何尋找包含的資料來源控制項。The following example shows how to find the containing data source control. 在此範例中,動態資料頁面範本會複製到 \DynamicData\CustomPages\ProductDescriptions 資料夾,以提供 AdventureWorksLT 資料庫 ProductDescription 資料表的自訂顯示。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. 插入 .aspx 檔案標記會變更,以加入OnDataBound名為DetailsView1_DataBoundFindDataSourceControl事件處理常式,其中會呼叫方法來尋找資料來源控制項。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>

適用於