• winform(容器、打印、对话框)


    一、布局:
    2个属性:
    Anchor:锁定位置
    Dock:填充位置
    一般Dock是与容器控件配合使用


    二、容器控件:
    Panel:就是一个区域,类似于DIV,可以独立布局,还可以让其它控件及容器在它的内部再次布局

    FlowLayoutPanel:流式布局容器,内容会默认从左向右排列,如果宽度不够了,那么自动换行

    GroupBox:依然是容器,拥有Panel全部属性,比Panel多了个标题和边框样式

    TabControl:选项卡容器

    SplitContainer:二分区容器,相当于两个panel,可以改变大小,也可以继续添加

    TableLayoutPanel:表格容器

    --------------------------------
    三、打印控件:
    PrintDocument:要打印的对象,非常重要
    程序不知道你要打印什么东西,它只会去找这个要打印的对象
    你所要做的事情,就是将要打印的内容绘制到这个打印对象上去

    PageSetupDialog:打印设置对话框

    PrintPreviewControl:打印预览控件
    PrintPreviewDialog:打印预览对话框

    PrintDialog:打印对话框

    DialogResult dr = printDialog1.ShowDialog();

    if (dr == DialogResult.OK)//如果用户点击的是确定按钮,那么执行打印
    {
    printDocument1.Print();
    }

    DialogResult是一个可被实例化的枚举类,用来接收用户在对话框中的操作

     打印代码:

     private void 打印设置ToolStripMenuItem_Click(object sender, EventArgs e)
            {
                pageSetupDialog1.Document = printDocument1;
                pageSetupDialog1.ShowDialog();
            }
    
            private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
            {
                Font f =new Font("黑体",18);
                SolidBrush b = new SolidBrush(Color.Black);
    
                e.Graphics.DrawString(textBox1.Text, f, b, 10, 10);
            }
    
            private void 打印预览VToolStripMenuItem_Click(object sender, EventArgs e)
            {
                printPreviewControl1.Document = printDocument1;
                printPreviewDialog1.Document = printDocument1;
                printPreviewDialog1.ShowDialog();
            }
    
            private void 打印PToolStripMenuItem_Click(object sender, EventArgs e)
            {
                printDialog1.Document = printDocument1;
                DialogResult dr = printDialog1.ShowDialog();
    
                if (dr == DialogResult.OK)
                {
                    printDocument1.Print();
                }
    
            }

    colorDialog - 颜色选择对话框

     private void 字体颜色ToolStripMenuItem_Click(object sender, EventArgs e)
            {
                DialogResult dr = colorDialog1.ShowDialog();
    
                if (dr == DialogResult.OK)
                {
                    textBox1.ForeColor = colorDialog1.Color;
                }
            }

    folderBrowserDialog - 文件路径选择对话框

     private void 选择文件夹ToolStripMenuItem_Click(object sender, EventArgs e)
            {
                folderBrowserDialog1.ShowDialog();
                toolStripStatusLabel1.Text = folderBrowserDialog1.SelectedPath;
            }

    fontDialog - 字体选择对话框,可在属性中打开ShowColor,在对话框中会出现颜色选择

     private void 字体设置ToolStripMenuItem_Click(object sender, EventArgs e)
            {
                fontDialog1.ShowDialog();
                textBox1.Font = fontDialog1.Font;
                textBox1.ForeColor = fontDialog1.Color;
            }

    openFileDialog - 打开文件对话框
    openFileDialog1.Filter = "文本文件.txt|*.txt|视频文件|*.avi|所有文件|*.*";

      private void 打开OToolStripMenuItem_Click(object sender, EventArgs e)
            {
                openFileDialog1.Filter = "文本文件.txt|*.txt|视频文件|*.avi|所有文件|*.*";
                DialogResult dr = openFileDialog1.ShowDialog();
    
                if (dr == DialogResult.OK)
                {
    
                    toolStripStatusLabel1.Text = openFileDialog1.FileName;
                    StreamReader sr = new StreamReader(openFileDialog1.FileName, System.Text.Encoding.Default);
                    textBox1.Text = sr.ReadToEnd();
                    sr.Close();
                }
    
            }

    saveFileDialog - 保存文件对话框
    问题:如果我已经保存过了,那么在次保存不需要弹出对话框,而是直接执行保存就可以。

            string path = "";
    
            private void 保存SToolStripMenuItem_Click(object sender, EventArgs e)
            {
                if (path == "")
                {
                    saveFileDialog1.FileName = "新建文本文件.txt";
    
                    DialogResult dr = saveFileDialog1.ShowDialog();
    
                    if (dr == DialogResult.OK)
                    {
                        toolStripStatusLabel1.Text = saveFileDialog1.FileName;
                        StreamWriter sw = new StreamWriter(saveFileDialog1.FileName);
                        sw.Write(textBox1.Text);
                        sw.Close();
                        path = saveFileDialog1.FileName;
                    }
                }
                else
                {
                    StreamWriter sw = new StreamWriter(path);
                    sw.Write(textBox1.Text);
                    sw.Close();
                }

    绝对路径:带盘符的 G:720...

    相对路径:根据你当前程序的目录下,找到某个文件夹 /css/css1.css

    流:IO
    StreamReader - 读取流 sr.ReadToEnd();
    StreamWriter - 输出流 sw.Write(要输出的内容);

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  • 原文地址:https://www.cnblogs.com/zblc2016/p/5898827.html
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