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namespace WindowsFormsApplication6{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            DialogResult dr = colorDialog1.ShowDialog();            if (dr == DialogResult.OK)            {                this.BackColor = colorDialog1.Color;            }        }        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);           }        }        private void button3_Click(object sender, EventArgs e)        {            fontDialog1.ShowDialog();            MessageBox.Show(fontDialog1.Font.Size.ToString());        }        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;            }        }        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)        {        }        private void button6_Click(object sender, EventArgs e)        {            this.Close();        }        private void button7_Click(object sender, EventArgs e)        {            pageSetupDialog1.Document = printDocument1;            pageSetupDialog1.ShowDialog();        }        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("宋體",12);            e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,5,5);        }        private void button9_Click(object sender, EventArgs e)        {            textBox1.SelectedText = "asd";        }        private void button10_Click(object sender, EventArgs e)        {            FirstForm.Find f = new FirstForm.Find(this.textBox1.SelectedText,this);            f.Owner = this;            f.Show();        }    }}

　　

記事本 對話方塊