上按鈕點擊控制不會去Sub

我有按鈕id = btnUploadxml，如圖所示;上按鈕點擊控制不會去Sub

<td> 
    <div id="divUpload" runat="server"> 
     <asp:FileUpload ID="FileUpload1" runat="server" 
      style="font-family: Tahoma, Verdana, Arial, Helvetica, MS Sans Serif;font-size: 9pt; font-weight:bolder;" 
      BackColor="White" ForeColor="Black" Height="50px" 
      CssClass="ceva-form-btn btn-dialog" Width="458px" />    
     <asp:Button Text="Import File" runat="server" ID="btnUploadxml" /> 
     <br /> 
     <br /> 
    </div> 
</td>

並點擊按鈕後，控制應該去

Public Sub btnUploadxml_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUploadxml.Click 

    If Not FileUpload1.HasFile Then 
     ErImport.Text = "ErImport, File required" 
     ErImport.Visible = "True" 
     'UIValidator.AddErrorSummary("", "Select file to import", "File required")

上點擊控制應該去我btnUploadxml_Click子，但一些如何它給我的錯誤

「 System.InvalidOperationException：由於對象的當前狀態，操作無效。「

請指教!!

來源

2017-07-26 user7776356

你有很多表單域嗎？也許你需要[增加限制]（https://stackoverflow.com/questions/8832470/operation-is-not-valid-due-to-the-current-state-of-the-object-error-during-正）。 –

你是對的，增加了限制後對我的工作很好..謝謝!! – user7776356

儘量把你的web.config文件中的代碼：

<appSettings> 
<add key="aspnet:MaxHttpCollectionKeys" value="2001" /> 
</appSettings>

你將覆蓋默認值是1000嘗試2001或更大的價值。該值的定義是這樣的：

aspnet:MaxHttpCollectionKeys 

Limits the maximum number of items that can be present in any of the client- provided dictionaries of the HttpRequest object.

來源

2017-07-26 16:35:29 FabioTos

上按鈕點擊控制不會去Sub

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