Question

我用图像上传制作了注册表格，图像之外的所有文本框值都上传到了SQL Server中。我写了下面显示的代码并对其进行了测试，但是它不存储任何图像。

但是当我删除图像并仅添加其他值时，它将插入数据库中而没有任何错误。

但是带有图片，它显示了一个错误：

“无法保存图书记录”

图像列的类型为varbinary(MAX)。

protected void Button1_Click(object sender, EventArgs e)
{
    string fileName = string.Empty;
    string filePath = string.Empty;

    Byte[] bytes;
    FileStream fs;

    BinaryReader br;

    SqlCommand cmd = new SqlCommand("InsertBookDetails_Sp", con);
    cmd.CommandType = CommandType.StoredProcedure;

    cmd.Parameters.AddWithValue("@book_num", TextBox1.Text.Trim());
    cmd.Parameters.AddWithValue("@BookName", TextBox2.Text.Trim());
    cmd.Parameters.AddWithValue("@Publisher", TextBox3.Text.Trim());
    cmd.Parameters.AddWithValue("@Price", TextBox4.Text.Trim());
    cmd.Parameters.AddWithValue("@Author", TextBox6.Text.Trim());

    try
    {
        if (FileUpload1.HasFile)
        {
            fileName = FileUpload1.FileName;
            filePath = Server.MapPath("pth/" + System.Guid.NewGuid() + fileName);
            FileUpload1.SaveAs(filePath);

            fs = new FileStream(filePath, FileMode.Open,FileAccess.Read);
            br = new BinaryReader(fs);
            bytes = br.ReadBytes(Convert.ToInt32(fs.Length));
            br.Close();
            fs.Close();

            cmd.Parameters.AddWithValue("@BookPic", bytes);
        }

        con.Open();
        cmd.ExecuteNonQuery();

        lblStatus.Text = "Book Record saved successfully";
        lblStatus.ForeColor = Color.Green;
    }
    catch (Exception)
    {
        lblStatus.Text = "Book Record could not be saved";
        lblStatus.ForeColor = Color.Red;
    }
    finally
    {
        con.Close();
        cmd.Dispose();

        fileName = null;
        filePath = null;
        fs = null;
        br = null;
    }
}

Answer 1

使用此代码

      byte[] fileBytes=  FileUpload1.FileBytes;
      cmd.Parameters.AddWithValue("@BookPic", fileBytes);

并删除FileStream方法

图片未上传到SQL Server

1 个答案: