protected void Button1_Click(object sender, EventArgs e)
{ this.Label1.Font.Size = 55;//方法一：设置字体大小 this.Label1.Font.Size = FontUnit.Larger;//方法二：设置字体大小
this.Label1.Font.Size = FontUnit.Point(42);//方法三：设置字体大小，单位是pt磅 this.Label1.Font.Bold = true; this.Label1.Font.Name = "楷体, 楷体_GB2312, SimKai";//楷体 this.Label1.ForeColor = System.Drawing.Color.Red;}原文：https://www.cnblogs.com/694579350liuq/p/9001711.html