winform —— 对话框和流及打印

对话框：  注意引用using System.IO;
showdialog();显示对话框，返回一个dialogresult的枚举类型

colorDialog：color属性，用来获取颜色
folderBrowserDialog:SelectedPath选中路径
fontDialog:font属性，返回一个font类型的值，里面存储了关于字体的设置
openFileDialog:
filename获取或设置文件路径包含文件名
filenames 是文件路径字符串数组
filter:文件筛选器 格式为 提示文本一|*.后缀|提示文本二|*.后缀|提示文本三|*.后缀
saveFileDialog1:
filename获取或设置文件路径包含文件名
filenames 是文件路径字符串数组
filter:文件筛选器 格式为 提示文本一|*.后缀|提示文本二|*.后缀|提示文本三|*.后缀

  1 using System;

  2 using System.Collections.Generic;

  3 using System.ComponentModel;

  4 using System.Data;

  5 using System.Drawing;

  6 using System.Linq;

  7 using System.Text;

  8 using System.Windows.Forms;

  9 using System.IO;

 10 

 11 namespace WindowsFormsApplication6

 12 {

 13     public partial class Form1 : Form

 14     {

 15         public Form1()

 16         {

 17             InitializeComponent();

 18         }

 19         //颜色

 20         private void button1_Click(object sender, EventArgs e)

 21         {

 22             DialogResult dr = colorDialog1.ShowDialog();

 23             if (dr == DialogResult.OK)

 24             {

 25                 this.BackColor = colorDialog1.Color;

 26             }

 27         }

 28         //文件夹浏览器

 29         private void button2_Click(object sender, EventArgs e)

 30         {

 31            DialogResult dr = folderBrowserDialog1.ShowDialog();

 32            if (dr == DialogResult.OK)

 33            {

 34                MessageBox.Show(folderBrowserDialog1.SelectedPath);

 35            }

 36            else

 37            {

 38                MessageBox.Show(folderBrowserDialog1.SelectedPath);

 39            }

 40         }

 41         //字体

 42         private void button3_Click(object sender, EventArgs e)

 43         {

 44             fontDialog1.ShowDialog();

 45             MessageBox.Show(fontDialog1.Font.Size.ToString());

 46         }

 47         //打开

 48         private string Files;

 49         private void button4_Click(object sender, EventArgs e)

 50         {

 51             DialogResult dr = openFileDialog1.ShowDialog();

 52             if (DialogResult.OK == dr)

 53             {

 54                 string filename = openFileDialog1.FileName;

 55                 StreamReader sr = new StreamReader(filename);

 56                 textBox1.Text = sr.ReadToEnd();

 57                 sr.Close();

 58 

 59                 Files = filename;

 60             }

 61         }

 62         //保存

 63         private void button5_Click(object sender, EventArgs e)

 64         {

 65             if (Files == null)

 66             {

 67                 saveFileDialog1.Filter = "文本 |*.txt|word|*.doc|excel|*.xls";

 68                 DialogResult dr = saveFileDialog1.ShowDialog();

 69                 if (dr == DialogResult.OK)

 70                 {

 71                     string filename = saveFileDialog1.FileName;

 72 

 73                     StreamWriter sw = new StreamWriter(filename);

 74                     sw.Write(textBox1.Text);

 75                     sw.Close();

 76                 }

 77             }

 78             else

 79             {

 80                 StreamWriter sw = new StreamWriter(Files);

 81                 sw.Write(textBox1.Text);

 82                 sw.Close();

 83             }

 84         }

 85 

 86         private void Form1_Load(object sender, EventArgs e)

 87         {

 88 

 89         }

 90         //关闭窗体

 91         private void button6_Click(object sender, EventArgs e)

 92         {

 93             this.Close();

 94         }

 95         //页面设置

 96         private void button7_Click(object sender, EventArgs e)

 97         {

 98             pageSetupDialog1.Document = printDocument1;

 99             pageSetupDialog1.ShowDialog();

100         }

101         //打印

102         private void button8_Click(object sender, EventArgs e)

103         {

104             printDialog1.Document = printDocument1;

105             DialogResult dr = printDialog1.ShowDialog();

106             if (dr == DialogResult.OK)

107             {

108                 printDocument1.Print();

109             }

110         }

111 

112         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)

113         {

114             System.Drawing.Font f = new System.Drawing.Font("宋体",12);

115             e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,5,5);

116         }

117     }

118 }

View Code

 

流：
输入流：

string filename = openFileDialog1.FileName;
//通过读入流进行文件读取
StreamReader sr = new StreamReader(filename);
textBox1.Text = sr.ReadToEnd();
sr.Close();

输出流：

string filename = saveFileDialog1.FileName;
//写入流，可以在硬盘上创建文件，并为文件写入信息
StreamWriter sw = new StreamWriter(filename);
sw.Write(this.textBox1.Text);
sw.Close();
this:代表的它所在的那个类当前对象

  1 using System;

  2 using System.Collections.Generic;

  3 using System.ComponentModel;

  4 using System.Data;

  5 using System.Drawing;

  6 using System.Linq;

  7 using System.Text;

  8 using System.Windows.Forms;

  9 using System.IO;

 10 

 11 namespace FirstForm

 12 {

 13     public partial class JiShiben : Form

 14     {

 15         public JiShiben()

 16         {

 17             InitializeComponent();

 18         }

 19 

 20         private void textBox1_TextChanged(object sender, EventArgs e)

 21         {

 22             //MessageBox.Show("你好");

 23             if (this.textBox1.Text.Length > 0)

 24             { 

 25                 撤销ToolStripMenuItem.Enabled = true;

 26             }

 27         }

 28 

 29         private void 复制ToolStripMenuItem_Click(object sender, EventArgs e)

 30         {

 31             textBox1.Copy();

 32         }

 33 

 34         private void 粘贴ToolStripMenuItem_Click(object sender, EventArgs e)

 35         {

 36             textBox1.Paste();

 37         }

 38 

 39         private void 剪切ToolStripMenuItem_Click(object sender, EventArgs e)

 40         {

 41             textBox1.Cut();

 42         }

 43 

 44         private void 撤销ToolStripMenuItem_Click(object sender, EventArgs e)

 45         {

 46             if (textBox1.CanUndo == true)

 47             {

 48                 // Undo the last operation.

 49                 textBox1.Undo();

 50                 // Clear the undo buffer to prevent last action from being redone.

 51                 textBox1.ClearUndo();

 52             }

 53         }

 54 

 55         private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)

 56         {

 57             textBox1.SelectedText = "";

 58         }

 59 

 60         private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)

 61         {

 62             textBox1.SelectAll();

 63         }

 64 

 65         private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)

 66         {

 67            DialogResult dr =  openFileDialog1.ShowDialog();

 68            if (dr == DialogResult.OK)

 69            {

 70                string filename = openFileDialog1.FileName;

 71                //通过读入流进行文件读取

 72                StreamReader sr = new StreamReader(filename);

 73                textBox1.Text = sr.ReadToEnd();

 74                sr.Close();

 75            }

 76         }

 77 

 78         private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)

 79         {

 80             if (this.textBox1.Text.Length > 0)

 81             {

 82                DialogResult drg= MessageBox.Show("是否进行保存?","保存对话框",MessageBoxButtons.YesNo);

 83                if (DialogResult.Yes == drg)

 84                {

 85                    if (FileName == null)

 86                    {

 87                        DialogResult dr = saveFileDialog1.ShowDialog();

 88                        if (dr == DialogResult.OK)

 89                        {

 90                            string filename = saveFileDialog1.FileName;

 91                            //写入流，可以在硬盘上创建文件，并为文件写入信息

 92                            StreamWriter sw = new StreamWriter(filename);

 93                            sw.Write(this.textBox1.Text);

 94                            sw.Close();

 95                        }

 96                    }

 97                    else

 98                    {

 99                        //写入流，可以在硬盘上创建文件，并为文件写入信息

100                        StreamWriter sw = new StreamWriter(FileName);

101                        sw.Write(this.textBox1.Text);

102                        sw.Close();

103                    }

104                }

105             }

106 

107             FileName = null;

108             this.textBox1.Text = "";

109         }

110         private string FileName;

111         private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)

112         {

113             if (FileName == null)

114             {

115                 DialogResult dr = saveFileDialog1.ShowDialog();

116                 if (dr == DialogResult.OK)

117                 {

118                     string filename = saveFileDialog1.FileName;

119                     //写入流，可以在硬盘上创建文件，并为文件写入信息

120                     StreamWriter sw = new StreamWriter(filename);

121                     sw.Write(this.textBox1.Text);

122                     sw.Close();

123                 }

124             }

125             else

126             {

127                 //写入流，可以在硬盘上创建文件，并为文件写入信息

128                 StreamWriter sw = new StreamWriter(FileName);

129                 sw.Write(this.textBox1.Text);

130                 sw.Close();

131             }

132         }

133 

134         private void 另存为ToolStripMenuItem_Click(object sender, EventArgs e)

135         {

136             saveFileDialog1.Filter = "文本文件(*.txt)|*.txt|word文件(*.doc)|*.doc";

137             DialogResult dr = saveFileDialog1.ShowDialog();

138             if (dr == DialogResult.OK)

139             {

140                 string filename = saveFileDialog1.FileName;

141                 //写入流，可以在硬盘上创建文件，并为文件写入信息

142                 StreamWriter sw = new StreamWriter(filename);

143                 sw.Write(this.textBox1.Text);

144                 sw.Close();

145             }

146         }

147 

148         private void 页面设置ToolStripMenuItem_Click(object sender, EventArgs e)

149         {

150             pageSetupDialog1.Document = printDocument1;//为页面设置对话框指定打印对象

151             pageSetupDialog1.ShowDialog();//打开页面对话框

152         }

153 

154         private void 打印ToolStripMenuItem_Click(object sender, EventArgs e)

155         {

156            DialogResult dr =  printDialog1.ShowDialog();

157            if (dr == DialogResult.OK)

158            {

159                printDocument1.Print();

160            }

161         }

162 

163         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)

164         {

165             //设置打印的画板内容

166             System.Drawing.Font f = new System.Drawing.Font("宋体", 12);

167             e.Graphics.DrawString(this.textBox1.Text, f, SystemBrushes.ActiveBorder, 10.0f, 0f);

168         }

169 

170         private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)

171         {

172             //Find ff = new Find(this.textBox1.SelectedText,this);

173             //ff.Owner = this;

174             //ff.Show();

175         }

176 

177         private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)

178         {

179             this.Close();

180         }

181 

182         private void JiShiben_Load(object sender, EventArgs e)

183         {

184 

185         }

186     }

187 }

View Code

 

打印：
打印对话框：printdialog
页面设置：pagesetupdialog
这两个对话框都需要通过设置printdocument来指定打印对象
printdocument：打印对象，必须要有，一块画板，用于打印机与打印内容之间中转，打印机打印的是printdoment
printDocument1_PrintPage:事件，每打印一页之前触发，用于给printdocument指定打印内容
通过画板把内容画到打印对象的页上：
System.Drawing.Font f = new System.Drawing.Font("宋体",12);
e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,5,5);
最后打印： 打印对话框那，如果打印对话框返回确定打印，就执行printdocument.print();