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
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO; namespace WindowsFormsApplication6
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//颜色
private void button1_Click(object sender, EventArgs e)
{
DialogResult dr = colorDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
this.BackColor = colorDialog1.Color;
}
}
//文件夹浏览器
private void button2_Click(object sender, EventArgs e)
{
DialogResult dr = folderBrowserDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
MessageBox.Show(folderBrowserDialog1.SelectedPath);
}
else
{
MessageBox.Show(folderBrowserDialog1.SelectedPath);
}
}
//字体
private void button3_Click(object sender, EventArgs e)
{
fontDialog1.ShowDialog();
MessageBox.Show(fontDialog1.Font.Size.ToString());
}
//打开
private string Files;
private void button4_Click(object sender, EventArgs e)
{
DialogResult dr = openFileDialog1.ShowDialog();
if (DialogResult.OK == dr)
{
string filename = openFileDialog1.FileName;
StreamReader sr = new StreamReader(filename);
textBox1.Text = sr.ReadToEnd();
sr.Close(); Files = filename;
}
}
//保存
private void button5_Click(object sender, EventArgs e)
{
if (Files == null)
{
saveFileDialog1.Filter = "文本 |*.txt|word|*.doc|excel|*.xls";
DialogResult dr = saveFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
string filename = saveFileDialog1.FileName; StreamWriter sw = new StreamWriter(filename);
sw.Write(textBox1.Text);
sw.Close();
}
}
else
{
StreamWriter sw = new StreamWriter(Files);
sw.Write(textBox1.Text);
sw.Close();
}
} private void Form1_Load(object sender, EventArgs e)
{ }
//关闭窗体
private void button6_Click(object sender, EventArgs e)
{
this.Close();
}
//页面设置
private void button7_Click(object sender, EventArgs e)
{
pageSetupDialog1.Document = printDocument1;
pageSetupDialog1.ShowDialog();
}
//打印
private void button8_Click(object sender, EventArgs e)
{
printDialog1.Document = printDocument1;
DialogResult dr = printDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
printDocument1.Print();
}
} private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
System.Drawing.Font f = new System.Drawing.Font("宋体",);
e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,,);
}
}
}
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
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO; namespace FirstForm
{
public partial class JiShiben : Form
{
public JiShiben()
{
InitializeComponent();
} private void textBox1_TextChanged(object sender, EventArgs e)
{
//MessageBox.Show("你好");
if (this.textBox1.Text.Length > )
{
撤销ToolStripMenuItem.Enabled = true;
}
} private void 复制ToolStripMenuItem_Click(object sender, EventArgs e)
{
textBox1.Copy();
} private void 粘贴ToolStripMenuItem_Click(object sender, EventArgs e)
{
textBox1.Paste();
} private void 剪切ToolStripMenuItem_Click(object sender, EventArgs e)
{
textBox1.Cut();
} private void 撤销ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (textBox1.CanUndo == true)
{
// Undo the last operation.
textBox1.Undo();
// Clear the undo buffer to prevent last action from being redone.
textBox1.ClearUndo();
}
} private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
{
textBox1.SelectedText = "";
} private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)
{
textBox1.SelectAll();
} private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult dr = openFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
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();
}
} private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (this.textBox1.Text.Length > )
{
DialogResult drg= MessageBox.Show("是否进行保存?","保存对话框",MessageBoxButtons.YesNo);
if (DialogResult.Yes == drg)
{
if (FileName == null)
{
DialogResult dr = saveFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
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();
}
}
else
{
//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();
}
}
} FileName = null;
this.textBox1.Text = "";
}
private string FileName;
private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (FileName == null)
{
DialogResult dr = saveFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
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();
}
}
else
{
//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();
}
} private void 另存为ToolStripMenuItem_Click(object sender, EventArgs e)
{
saveFileDialog1.Filter = "文本文件(*.txt)|*.txt|word文件(*.doc)|*.doc";
DialogResult dr = saveFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
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();
}
} private void 页面设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
pageSetupDialog1.Document = printDocument1;//为页面设置对话框指定打印对象
pageSetupDialog1.ShowDialog();//打开页面对话框
} private void 打印ToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult dr = printDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
printDocument1.Print();
}
} private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
//设置打印的画板内容
System.Drawing.Font f = new System.Drawing.Font("宋体", );
e.Graphics.DrawString(this.textBox1.Text, f, SystemBrushes.ActiveBorder, 10.0f, 0f);
} private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
{
//Find ff = new Find(this.textBox1.SelectedText,this);
//ff.Owner = this;
//ff.Show();
} private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
} private void JiShiben_Load(object sender, EventArgs e)
{ }
}
}
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();