C#圆形头像框制作并从数据库读取
现在只要是有关头像的框基本都是圆形的了,C#提供的PictureBox控键默认情况下是方形的非常大的影响美观
PictureBox默认情况下
比起上面的还是有一点不太好看的…
使用C#提供的类进行圆形:
工具箱拉出PictureBox
设置图片的显示模式为ZOOM
特别注意:
框的比例必须为一样不然会变椭圆的
窗体加载时:
pictureBox1.Image = Image.FromFile(@"C:\Users\Administrator\Desktop\1.png");
为了方便演示,在窗口加载的时候加载出图片
图片加载出来后然后,把框框变圆的
GraphicsPath gp = new GraphicsPath(); gp.AddEllipse(pictureBox1.ClientRectangle); Region region = new Region(gp); pictureBox1.Region = region;//赋值 gp.Dispose();//释放资源 region.Dispose();//释放资源
只有简单的几行
效果图:
一下美观了很多
接下来演示从数据库读取图片到框框上:
同样也是,写在窗口的加载事件
GraphicsPath gp = new GraphicsPath(); gp.AddEllipse(pictureBox1.ClientRectangle); Region region = new Region(gp); pictureBox1.Region = region; gp.Dispose(); region.Dispose(); CheckForIllegalCrossThreadCalls = false; username.Text = 登录界面.jmuser; Thread th = new Thread(a); th.IsBackground = true; th.Start(); us = username.Text; 首页 form = new 首页(); form.TopLevel = false; form.Parent = panel1; panel1.Controls.Add(form);//将子窗体载入panel form.Show(); SqlConnectionStringBuilder bu = new SqlConnectionStringBuilder(); bu.Password = "0"; bu.UserID = "0"; bu.DataSource = "0-0"; bu.InitialCatalog = "0"; SqlConnection b = new SqlConnection(bu.ToString()); string str = "select * from user1 where username ='" + 登录成功界面.us + "'"; b.Open(); SqlCommand c = new SqlCommand(str, b); SqlDataReader d = c.ExecuteReader(); while (d.Read()) { // label2.Text = d["userid"].ToString(); string s = d["头像"].ToString(); byte[] imageBytes = Convert.FromBase64String(s); MemoryStream memoryStream = new MemoryStream(imageBytes, 0, imageBytes.Length); memoryStream.Write(imageBytes, 0, imageBytes.Length); Image image = Image.FromStream(memoryStream); this.pictureBox1.SizeMode = PictureBoxSizeMode.Zoom; this.pictureBox1.Image = image; } }
效果图:
图片是从数据库读取的,并不是本地上传的!!
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