C# 当我有2个提交按钮时，HasFile属性的FileUpload返回false

我有一个

FileUpload

按钮和两个

Submit

按钮。第一个是

Confirm

，它显示了一个页面，其中包含了我在表单中输入的所有数据，我只是想确认它是否正常。第二个名为

Save

，将这些数据保存到我的数据库中

问题是，当我单击“确认”按钮时，

FileUpload

将

true

返回到

HasFile

属性，但在第二个按钮中，相同的操作将

false

返回到

HasFile

我能做些什么来修复它

代码

public void Confirm_Click(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
          // Many validations here
    }
}

public void Save_Click(object sender, EventArgs e)
{
    // Always return false here
    if (FileUpload1.HasFile)
    {
          // Many validations here
    }
}

<asp:Content ID="Content2" ContentPlaceHolderID="contentConteudo" runat="server">
   <asp:Panel runat="server" ID="Formulario">
      <asp:Panel ID="pnl_form" runat="server">
         <asp:FileUpload id="FileUpload1" class= "span2" runat="server"></asp:FileUpload>
         <asp:Button ID="Confirm" CssClass="btn btn-netimoveis btn-large" runat="server"
          OnClick="Confirm_Click"  UseSubmitBehavior="false"  Text="Confirmar" />
      </asp:Panel>
 </asp:Panel>
 <asp:Panel ID="pnl_confirm" runat="server">
    <asp:Button ID="Save" CssClass="btn btn-netimoveis btn-large" runat="server"
     Text="Incluir" OnClick="Save_Click" />
</asp:Panel>

ASPX代码

public void Confirm_Click(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
          // Many validations here
    }
}

public void Save_Click(object sender, EventArgs e)
{
    // Always return false here
    if (FileUpload1.HasFile)
    {
          // Many validations here
    }
}

<asp:Content ID="Content2" ContentPlaceHolderID="contentConteudo" runat="server">
   <asp:Panel runat="server" ID="Formulario">
      <asp:Panel ID="pnl_form" runat="server">
         <asp:FileUpload id="FileUpload1" class= "span2" runat="server"></asp:FileUpload>
         <asp:Button ID="Confirm" CssClass="btn btn-netimoveis btn-large" runat="server"
          OnClick="Confirm_Click"  UseSubmitBehavior="false"  Text="Confirmar" />
      </asp:Panel>
 </asp:Panel>
 <asp:Panel ID="pnl_confirm" runat="server">
    <asp:Button ID="Save" CssClass="btn btn-netimoveis btn-large" runat="server"
     Text="Incluir" OnClick="Save_Click" />
</asp:Panel>

文件上传背后的逻辑不容易理解。。文件是如何获取的，是否保存的。

如果忽略它，则可以在文件可用时使用它

public void Confirm_Click(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
          // Many validations here
          // Keep file in Session or in a temporary storage
    }
}

public void Save_Click(object sender, EventArgs e)
{
    // Take the file from session or temporary storage and save it

    if (myFile != null)
    {
          // Many validations here
     }
}

你能为按钮发布asp.net标记代码吗？这些信息似乎不足以识别问题。你在页面加载中用FileUpload1做什么？@Guanxi在页面加载中我不叫我的FileUpload。