0

我对 ASP.NET 很陌生，我正在为我的学校项目制作我的第一个应用程序，但我遇到了一个问题。

我有用于添加文件和图片的数据库。我使用了SqlDataSourceand DataList，所以我会自动生成插入、更新和删除。在代码隐藏 C# 中，我编写了代码，用于将图像直接添加到数据库和带有进入数据库的路径的文件，但我不知道如何将值（路径）添加到参数，以便可以将它们全部保存在一起。我应该使用什么命令？

也许这是个愚蠢的问题，但我没有人要问。抱歉，如果我的代码在此窗口中看起来有点有趣enter code here

这是我的 C#

protected void SqlDataSource1_Inserting(object sender, SqlDataSourceCommandEventArgs e)
{
   FileUpload kontrola = (FileUpload)FormView1.FindControl("FileUpload2");

   if (kontrola.PostedFile != null && kontrola.PostedFile.FileName != "")
   {
      BinaryReader reader = new BinaryReader(kontrola.PostedFile.InputStream);
      myImage = reader.ReadBytes(kontrola.PostedFile.ContentLength);
   }

   System.Data.SqlClient.SqlParameter uploadData =  
   new System.Data.SqlClient.SqlParameter("@image",System.Data.SqlDbType.Image);               
   uploadData.Value = myImage;

   e.Command.Parameters.Add(uploadData);

   FileUpload kontrola2 = (FileUpload)FormView1.FindControl("FileUpload1");

   //Get Filename from fileupload control
   string filename = Path.GetFileName(kontrola2.PostedFile.FileName);
   //Save images into Images folder
   kontrola2.SaveAs(Server.MapPath("~/files/" + kontrola2.FileName));

   string valp = "files/" + kontrola2.FileName; //  I am not sure if this is right

   //e.Command.Parameters.Add["@data_file"].Value = valp; // this is not right, but this part I don't know
}

这是我在aspx.

<asp:SqlDataSource ID="SqlDataSource1" runat="server" 
     ConnectionString="<%$ ConnectionStrings:repository_dbConnectionString %>" 
     SelectCommand="SELECT * FROM [data]" 
     DeleteCommand="DELETE FROM [data] WHERE [id] = @id" 
     InsertCommand="INSERT INTO [data] ([data_set_name], [abstract], [source], [multivariate], [unvariate], [sequentional], [time_series], [text], [domain_theory], [clasification], [regression], [clustering], [casual_discovery], [categorical], [integer], [real], [life_sciences], [physical_sciences], [cs_engineering], [social_sciences], [business], [game], [other], [matrix], [non_matrix], [yes], [no], [num_istances], [num_attributes], [relevant_info], [attribute_info], [relevant_papers], [citation_request], [data_file], [image], [date], [approval]) VALUES (@data_set_name, @abstract, @source, @multivariate, @unvariate, @sequentional, @time_series, @text, @domain_theory, @clasification, @regression, @clustering, @casual_discovery, @categorical, @integer, @real, @life_sciences, @physical_sciences, @cs_engineering, @social_sciences, @business, @game, @other, @matrix, @non_matrix, @yes, @no, @num_istances, @num_attributes, @relevant_info, @attribute_info, @relevant_papers, @citation_request, @data_file, @image, GetDate(), @approval)" 
    UpdateCommand...
    oninserting="SqlDataSource1_Inserting">
   <DeleteParameters>
      <asp:Parameter Name="id" Type="Int32" />
   </DeleteParameters>
   <InsertParameters>
        <asp:Parameter Name="data_set_name" Type="String" />
        <asp:Parameter Name="abstract" Type="String" />
        <asp:Parameter Name="source" Type="String" />
        <asp:Parameter Name="multivariate" Type="Boolean" />
        <asp:Parameter Name="unvariate" Type="Boolean" />
        <asp:Parameter Name="sequentional" Type="Boolean" />
        <asp:Parameter Name="time_series" Type="Boolean" />
        <asp:Parameter Name="text" Type="Boolean" />
        <asp:Parameter Name="domain_theory" Type="Boolean" />
        <asp:Parameter Name="clasification" Type="Boolean" />
        <asp:Parameter Name="regression" Type="Boolean" />
        <asp:Parameter Name="clustering" Type="Boolean" />
        <asp:Parameter Name="casual_discovery" Type="Boolean" />
        <asp:Parameter Name="categorical" Type="Boolean" />
        <asp:Parameter Name="integer" Type="Boolean" />
        <asp:Parameter Name="real" Type="Boolean" />
        <asp:Parameter Name="life_sciences" Type="Boolean" />
        <asp:Parameter Name="physical_sciences" Type="Boolean" />
        <asp:Parameter Name="cs_engineering" Type="Boolean" />
        <asp:Parameter Name="social_sciences" Type="Boolean" />
        <asp:Parameter Name="business" Type="Boolean" />
        <asp:Parameter Name="game" Type="Boolean" />
        <asp:Parameter Name="other" Type="Boolean" />
        <asp:Parameter Name="matrix" Type="Boolean" />
        <asp:Parameter Name="non_matrix" Type="Boolean" />
        <asp:Parameter Name="yes" Type="Boolean" />
        <asp:Parameter Name="no" Type="Boolean" />
        <asp:Parameter Name="num_istances" Type="Int32" />
        <asp:Parameter Name="num_attributes" Type="Int32" />
        <asp:Parameter Name="relevant_info" Type="String" />
        <asp:Parameter Name="attribute_info" Type="String" />
        <asp:Parameter Name="relevant_papers" Type="String" />
        <asp:Parameter Name="citation_request" Type="String" />
        <asp:Parameter Name="data_file" Type="String" />
        <asp:Parameter DbType="Date" Name="date" />
        <asp:Parameter Name="approval" Type="Boolean" />
    </InsertParameters>
4

2 回答 2

1

您已经在 SqlDataSource 中指定了 Insert 参数，因此它们已经存在于 Parameters 集合中。您只需要调用：

e.Command.Parameters["@data_file"].Value = ....
于 2013-06-08T18:30:14.440 回答
0

您可以在前端 aspx 中使用，然后在后端 C# 中使用相同的 this

  var conn = ConfigurationManager.ConnectionStrings["YesserDB"].ConnectionString;
        using (var connection = new SqlConnection(conn))
        {
            SqlCommand cmd = new SqlCommand("INSERT INTO testOne (DocNo,DocSysNo,DocTypeID,DocDate,DocDateHj,DocSubjectID,DocDestinaionID,DocSoureceID,DocConfidentionyID,DocPriorityID,DocRemarks,DocAttributes) VALUES (@DocNo,@DocSysNo,@DocTypeID,@DocDate,@DocDateHj,@DocSubjectID,@DocDestinaionID,@DocSoureceID,@DocConfidentionyID,@DocPriorityID,@DocRemarks,@DocAttributes)", connection);
            cmd.Parameters.AddWithValue("@DocNo", DocNo );
            cmd.Parameters.AddWithValue("@DocSysNo", DocSysNo );
            cmd.Parameters.AddWithValue("@DocTypeID", DocTypeID );
            cmd.Parameters.AddWithValue("@DocDate", DocDate);
            cmd.Parameters.AddWithValue("@DocDateHj", DocDateHj);
            cmd.Parameters.AddWithValue("@DocSubjectID", DocSubjectID );
            cmd.Parameters.AddWithValue("@DocDestinaionID",DocDestinaionID );
            cmd.Parameters.AddWithValue("@DocSoureceID",DocSoureceID );
            cmd.Parameters.AddWithValue("@DocConfidentionyID", DocConfidentionyID);
            cmd.Parameters.AddWithValue("@DocPriorityID", DocPriorityID);
            cmd.Parameters.AddWithValue("@DocRemarks", DocRemarks);
            cmd.Parameters.AddWithValue("@DocAttributes", DocAttributes);
            //cmd.Parameters.AddWithValue("@AttachFile", FileUpload1.TemplateControl);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            da.Fill(dt);
于 2018-07-12T06:07:26.520 回答