生成文件MD5 Hash On Button单击C＃.NET

I am trying to generate a files MD5 hash.

我正在尝试生成MD5哈希文件。

Essentially how it should work.

基本上它应该如何工作。

I press a browse button on my software to browse which file I want tos can > I select the file I want to scan > and it displays the MD5 hash to a label

我按下我的软件上的浏览按钮来浏览我想要的文件>我选择我要扫描的文件>它会将MD5哈希显示给标签

here is a visual example of what I am trying to accomplish.

这是我想要完成的一个视觉示例。

My question is, how do I grab the MD5 hash, I have never seen any code that grabs MD5 hashes from a file so I have no idea how its supposed to be done.

我的问题是，如何获取MD5哈希，我从未见过任何从文件中获取MD5哈希值的代码，因此我不知道它应该如何完成。

2 个解决方案

#1

Try this for windows forms and modify it for your needs:

尝试使用Windows窗体并根据需要进行修改：

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        openFileDialog1.FileOk += OpenFileDialog1_FileOk;
    }

    private void OpenFileDialog1_FileOk(object sender, CancelEventArgs e)
    {
        string path = ((OpenFileDialog)sender).FileName;
        using (var md5 = MD5.Create())
        {
            using (var stream = File.OpenRead(path))
            {
                label1.Text = BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", "");
            }
        }
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        //show file dialog on form load
        openFileDialog1.ShowDialog();
    }
}

It's a combination of Calculate MD5 checksum for a file and How to convert an MD5 hash to a string and use it as a file name

它是计算文件的MD5校验和和如何将MD5哈希转换为字符串并将其用作文件名的组合

#2

This is what worked in the end!

这是最终有效的！

public string MD5HashFile(string fn)
{
    byte[] hash = MD5.Create().ComputeHash(File.ReadAllBytes(fn));
    return BitConverter.ToString(hash).Replace("-", "");

}

private void lblTitle_Load(object sender, EventArgs e)
{

}



private void scanButton_Click(object sender, EventArgs e)
{

    //Create a path to the textBox that holds the value of the file that is going to be scanned
    string path = txtFilePath.Text;

    //if there is something in the textbox to scan we need to make sure that its doing it.
    if (!File.Exists(path))
    {
                            // ... report problem to user.
      return;

    }
    else
    {
        MessageBox.Show("Scan Complete");
    }

    //Display the computed MD5 Hash in the path we declared earlier
    hashDisplay.Text = MD5HashFile(path);


}

#1