如何上传和插入多个文件到我的数据库? [英] How do I upload and insert several files into my DB?
问题描述
嘿伙计们,我正在使用以下代码将文件插入我的数据库:
Hey guys, I'm using the following code to insert files into my DB:
<span>
<asp:FileUpload ID="FileUpload" runat="server" />
<br />
<asp:Button ID="btnUpload" runat="server" Text="Upload"
OnClick="btnUpload_Click" />
<asp:Label ID="lblMessage" runat="server" Text=""
Font-Names="Arial"></asp:Label>
</span>
,后台代码:
with the background code:
protected void btnUpload_Click(object sender, EventArgs e)
{
// Read the file and convert it to Byte Array
string filePath = FileUpload.PostedFile.FileName;
string filename = Path.GetFileName(filePath);
string ext = Path.GetExtension(filename);
string contenttype = String.Empty;
//Set the contenttype based on File Extension
switch (ext)
{
case ".doc":
contenttype = "application/vnd.ms-word";
break;
case ".docx":
contenttype = "application/vnd.ms-word";
break;
case ".xls":
contenttype = "application/vnd.ms-excel";
break;
case ".xlsx":
contenttype = "application/vnd.ms-excel";
break;
case ".jpg":
contenttype = "image/jpg";
break;
case ".png":
contenttype = "image/png";
break;
case ".gif":
contenttype = "image/gif";
break;
case ".pdf":
contenttype = "application/pdf";
break;
}
if (contenttype != String.Empty)
{
Stream fs = FileUpload.PostedFile.InputStream;
BinaryReader br = new BinaryReader(fs);
Byte[] bytes = br.ReadBytes((Int32)fs.Length);
//insert the file into database
string strQuery = "INSERT INTO Files(Name, Content_Type, Data)" +
" VALUES (@Name, @ContentType, @Data)";
SqlCommand cmd = new SqlCommand(strQuery);
cmd.Parameters.Add("@Name", SqlDbType.VarChar).Value = filename;
cmd.Parameters.Add("@ContentType", SqlDbType.VarChar).Value
= contenttype;
cmd.Parameters.Add("@Data", SqlDbType.Binary).Value = bytes;
InsertUpdateData(cmd);
lblMessage.ForeColor = System.Drawing.Color.Green;
lblMessage.Text = "File Uploaded Successfully";
}
else
{
lblMessage.ForeColor = System.Drawing.Color.Red;
lblMessage.Text = "File format not recognised." +
" Upload Image/Word/PDF/Excel formats";
}
}
private Boolean InsertUpdateData(SqlCommand cmd)
{
String strConnString = System.Configuration.ConfigurationManager
.ConnectionStrings["FORgestIT"].ConnectionString;
SqlConnection con = new SqlConnection(strConnString);
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
try
{
con.Open();
cmd.ExecuteNonQuery();
return true;
}
catch (Exception ex)
{
Response.Write(ex.Message);
return false;
}
finally
{
con.Close();
con.Dispose();
}
}
这里发生的是每次点击上传按钮,文件上传和保存正确地进入数据库,这是完美的工作...问题是这不是我想要的工作,因为这是来自WebForms页面,还有更多的表单字段,我通过不同的方式插入到数据库中按钮。我想要的是让用户能够选择多个文件,但只有当所有其他文件都被上传时才会保存到数据库中...
我正在使用2个表一个用于所有其他文件字段和文件1 ...
请按照我想要的方式给出建议:
What happens here is that everytime i click on the upload button the file uploads and saves correctly into the DB, this is working perfectly... the problem is this isn't how I want it to work since this is from a WebForms page and there are many more form fields which I'm inserting to a DB through a different button. What I want is for users to be able to select several files but they only upload and are saved into the DB when all the others are...
I'm using 2 tables one for all the others fields and 1 for the files...
Please give me suggestions on how to do this the way I want it
推荐答案
这是一个你可以使用的成品:
jQuery multiupload widget [ ^ ]
Here is one finished product that you can use:
jQuery multiupload widget[^]
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