不能从后面的代码调用JS函数 [英] Cannot call a JS function from code behind

问题描述

我正在尝试从DisplayBrandGridView_RowInserting事件的后面的代码中提交一个JS函数。当RegisterStratupScipt运行时，没有任何事情发生，JS函数甚至没有命中。

I am trying to submit a JS function from the code behind of a "DisplayBrandGridView_RowInserting" event. When the RegisterStratupScipt runs, nothing happens and the JS function is not even hit.

将记录插入数据库（在此事件中成功）之前，我需要立即执行JS函数，该函数将显示一个按钮，将数据添加到另一个表。请注意，从客户端执行时，该JS函数工作正常。我不在乎它是从客户端还是服务器执行。在这些条件下，我可以想到执行它的唯一方法是从服务器端。

After a record is inserted into the DB (which is successful from within this event), I need to immediately execute the JS function which will show a button to add data to another table. Note that this JS function works fine when executed from the client side. I don't care whether it's executed from the client or server. The only way I can think of to execute it under these conditions is from the server side.

以下是从HTML开始新行对话框的事件：

Here is the event which starts the new row dialog from within the HTML:

    <dx:ASPxButton ID="btnAddNew" Text="Add New" runat="server" CausesValidation="false" AutoPostBack="false" Theme="PlasticBlue" ClientInstanceName="btnAddNew">
 <ClientSideEvents Click="function (s,e) { DisplayBrandsClientGridView.AddNewRow(); }" />
 </dx:ASPxButton>

这是JS函数：

function ShowBrandModelSearch()
 {
 var associateBrand = eval( '<%# BrandModelSearch.ClientInstanceName %>' );
 associateBrand.DoClick();
 }

以下是从上面的HTML客户端事件执行的代码：

Here is the code behind which gets executed from the HTML client side event above:

protected void DisplayBrandGridView_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)
 {
 var grid = sender as ASPxGridView;

 try
 {
 grid.JSProperties["cpDesc"] = false;

 var description = e.NewValues["Description"].ToString().Trim();

 using (var dcWeb = DataContextExtension.FromConfig<DCMerchant>())
 {
 if (dcWeb.Merch_DisplayBrands.Any(a => a.Description == description))
 {
 // Display Brand already exists
 grid.JSProperties["cpDesc"] = true;
 grid.JSProperties["cpConfirmationMessageHeader"] = "Display Brand Exists";
 grid.JSProperties["cpConfirmationMessage"] = string.Format("Display Brand {0} already exists. Please specify a unique name.", description);
 }
 else
 {
 try
 {
 var dBrand = new Merch_DisplayBrand()
 {
 Description = description,
 IsActive = Utility.GetValue<bool>(e.NewValues["IsActive"]),
 ModifiedBy = CurrentUser.LawsonId,
 ModifiedOn = DateTime.Now
 };
 dcWeb.Merch_DisplayBrands.InsertOnSubmit(dBrand);
 dcWeb.SubmitChanges(ConflictMode.ContinueOnConflict);

 // Needed to keep track of filter
 if (string.IsNullOrWhiteSpace(Utility.GetValue<string>(PageData["FilterText"])))
 {
 grid.JSProperties["cpFilterText"] = description;
 PageData["FilterText"] = description;
 SearchTextASPxTextBox.Text = description;
 }
 else
 grid.JSProperties["cpFilterText"] = PageData["FilterText"];

 Page.ClientScript.RegisterStartupScript(this.GetType(), "BrandModelSearch", "ShowBrandModelSearch();", true);

 }
 catch (Exception ex)
 {
 if (!ex.ResolveConflicts(dcWeb))
 {
 ex.AddTruncatedFieldInfo(dcWeb);
 throw;
 }
 }
 }
 }
 }
 catch (Exception ex)
 {
 ex.Log();
 }
 finally
 {
 e.Cancel = true;
 grid.CancelEdit();
 }
 }

如何成功执行此功能（客户端或服务器一边添加一行，添加新对话框就会消失？

How can I successfully execute this function (client or server side) after a row has been added and the "add new dialog" goes away?

推荐答案

你需要执行你的js代码在 EndCallback 处理程序。我回答了类似的问题这里和此处。

You need to execute your js code in EndCallback handler. I answered similar questions here and here.

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