仅限ASP.NET fileupload图像,在sql表中保存路径和文件名

Question

可能重复:
如何在FileUpload控件中限制文件类型

我有一个问题,使用我的图像上传器.它将上传所有类型的文件.我需要背后的代码,以弄清楚它是否是一个图像(jpg,png等).然后它需要在我的SQL中保存路径和文件名.保存名称和路径已启动并正在运行,正则表达式也是如此.我现在需要合并我在这里找到的som代码.问题是,它是如何完成的？

我的代码背后是:

protected void btnUpload_Click(object sender, EventArgs e)
{
    if (FileUpload1.PostedFile != null)
    {
        string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName);

        //Save files to disk
        FileUpload1.SaveAs(Server.MapPath("~/_PublicData/Images/" + FileName));

        //Add Entry to DataBase
        String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["Computer_Klubben_CommunitySiteConnectionString"].ConnectionString;
        SqlConnection con = new SqlConnection(strConnString);
        string strQuery = "insert into dbo.Billeder (FileName, FilePath)" + " values(@FileName, @FilePath)";
        SqlCommand cmd = new SqlCommand(strQuery);
        cmd.Parameters.AddWithValue("@FileName", FileName);
        cmd.Parameters.AddWithValue("@FilePath", "~/_PublicData/Images/" + FileName);
        cmd.CommandType = CommandType.Text;
        cmd.Connection = con;

        try
        {
            con.Open();
            cmd.ExecuteNonQuery();
        }

        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }

        finally
        {
            con.Close();
            con.Dispose();
        }
    }
}

我需要将代码放在以下代码中,我在这里找到了. 我怎样才能上传jpeg文件？

我是否将代码放在此处的代码之后,还是将其放置？请帮忙.

Answer 1

protected void btnUpload_Click(object sender, EventArgs e)
{
    if (FileUpload1.PostedFile != null)
    {
            string fileExt = 
               System.IO.Path.GetExtension(FileUpload1.FileName);

            if (fileExt == ".jpeg" || fileExt == ".jpg")
            {

string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName);

        //Save files to disk
        FileUpload1.SaveAs(Server.MapPath("~/_PublicData/Images/" + FileName));

        //Add Entry to DataBase
        String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["Computer_Klubben_CommunitySiteConnectionString"].ConnectionString;
        SqlConnection con = new SqlConnection(strConnString);
        string strQuery = "insert into dbo.Billeder (FileName, FilePath)" + " values(@FileName, @FilePath)";
        SqlCommand cmd = new SqlCommand(strQuery);
        cmd.Parameters.AddWithValue("@FileName", FileName);
        cmd.Parameters.AddWithValue("@FilePath", "~/_PublicData/Images/" + FileName);
        cmd.CommandType = CommandType.Text;
        cmd.Connection = con;

        try
        {
            con.Open();
            cmd.ExecuteNonQuery();
        }

        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }

        finally
        {
            con.Close();
            con.Dispose();
        }


}
else
{
  //Show Error Message. Invalid file.
}


    }

}