问题

我目前正在进行一个C#表单项目的工作，但遇到了以下问题：

> 错误 CS0117：'Image' 不包含 'Load' 的定义
> 错误 CS0308：非泛型类型 'Image' 不能与类型参数一起使用
> 错误 CS0246：类型或命名空间名称 'Rgba32' 无法找到（是否缺少 using 指令或程序集引用？）
> 错误 CS0246：类型或命名空间名称 'SixLabors' 无法找到（是否缺少 using 指令或程序集引用？）
> 错误 CS0246：类型或命名空间名称 'SixLabors' 无法找到（是否缺少 using 指令或程序集引用？）
> 错误 CS0246：类型或命名空间名称 'SixLabors' 无法找到（是否缺少 using 指令或程序集引用？）
> 错误 CS0246：类型或命名空间名称 'ImageSharp' 无法找到（是否缺少 using 指令或程序集引用？）

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Processing;
using SixLabors.ImageSharp.PixelFormats;

namespace Database_Form
{
    public partial class UserInfo : Form
    {
        private string firstName;
        private string lastName;
        private string username;

        public UserInfo(string username)
        {
            InitializeComponent();
            this.username = username;

            // 从数据库中检索人的名字和姓氏
            string matricule = "";
            byte[] imageData = null;
            using (SqlConnection connection = new SqlConnection("我隐藏了这部分代码!!"))
            {
                connection.Open();
                SqlCommand command = new SqlCommand("SELECT Matricule, ProfilePicture FROM Login WHERE Username = @Username", connection);
                command.Parameters.AddWithValue("@Username", username);
                SqlDataReader reader = command.ExecuteReader();
                if (reader.Read())
                {
                    matricule = reader.GetString(0);
                    if (!reader.IsDBNull(1))
                    {
                        imageData = (byte[])reader["ProfilePicture"];
                    }
                }
                reader.Close();

                command = new SqlCommand("SELECT Nom, Prenom FROM Salarie WHERE Matricule = @Matricule", connection);
                command.Parameters.AddWithValue("@Matricule", matricule);
                reader = command.ExecuteReader();
                if (reader.Read())
                {
                    firstName = reader.GetString(0);
                    lastName = reader.GetString(1);
                }
                reader.Close();
            }

            // 设置标签的文本为人的名字和姓氏
            nameLabel.Text = firstName;
            lastNameLabel.Text = lastName;

            // 在图片框中显示个人资料图片
            if (imageData != null)
            {
                using (MemoryStream ms = new MemoryStream(imageData))
                {
                    Image<Rgba32> image = Image.Load<Rgba32>(ms);
                    image.Mutate(x => x.Resize(new Size(pictureBox1.Width, pictureBox1.Height)));
                    pictureBox1.Image = image.ToBitmap();
                }
            }
        }

        private void backButton_Click_1(object sender, EventArgs e)
        {
            MainPage mainPageForm = new MainPage(username);
            mainPageForm.Show();
            this.Close();
        }
        private void UserInfo_Load(object sender, EventArgs e)
        {

        }

        private void label2_Click(object sender, EventArgs e)
        {

        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {

        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Processing;
using SixLabors.ImageSharp.PixelFormats;
namespace Database_Form
{
public partial class UserInfo : Form
{
private string firstName;
private string lastName;
private string username;
public UserInfo(string username)
{
InitializeComponent();
this.username = username;
// Retrieve the person's name and last name from the database
string matricule = "";
byte[] imageData = null;
using (SqlConnection connection = new SqlConnection("i hid this part of the code!!"))
{
connection.Open();
SqlCommand command = new SqlCommand("SELECT Matricule, ProfilePicture FROM Login WHERE Username = @Username", connection);
command.Parameters.AddWithValue("@Username", username);
SqlDataReader reader = command.ExecuteReader();
if (reader.Read())
{
matricule = reader.GetString(0);
if (!reader.IsDBNull(1))
{
imageData = (byte[])reader["ProfilePicture"];
}
}
reader.Close();
command = new SqlCommand("SELECT Nom, Prenom FROM Salarie WHERE Matricule = @Matricule", connection);
command.Parameters.AddWithValue("@Matricule", matricule);
reader = command.ExecuteReader();
if (reader.Read())
{
firstName = reader.GetString(0);
lastName = reader.GetString(1);
}
reader.Close();
}
// Set the labels' text to the person's name and last name
nameLabel.Text = firstName;
lastNameLabel.Text = lastName;
// Display the profile picture in the picture box
if (imageData != null)
{
using (MemoryStream ms = new MemoryStream(imageData))
{
Image<Rgba32> image = Image.Load<Rgba32>(ms);
image.Mutate(x => x.Resize(new Size(pictureBox1.Width, pictureBox1.Height)));
pictureBox1.Image = image.ToBitmap();
}
}
}
private void backButton_Click_1(object sender, EventArgs e)
{
MainPage mainPageForm = new MainPage(username);
mainPageForm.Show();
this.Close();
}
private void UserInfo_Load(object sender, EventArgs e)
{
}
private void label2_Click(object sender, EventArgs e)
{
}
private void pictureBox1_Click(object sender, EventArgs e)
{
}
}
}

答案1

得分: 1

首先，您必须拥有.NET 6.0项目类型。
接下来，您必须打开 '工具' 菜单，'NuGet包管理器'，'包管理器控制台'，并写入 'Install-Package SixLabors.ImageSharp' 以安装SixLabors包。
最后，添加 'using Image = SixLabors.ImageSharp.Image;' 指令。