RichTextBox控件允許用戶輸入和編輯文本的同時提供了比普通的TextBox控件更高級的格式特征

//color在c#中是個枚舉enum

藍色按鈕：在藍色按鈕註冊click事件後，richtextbox1.selectioncolor=color.blue；

紅色按鈕：在紅色按鈕註冊click事件後，RichTextBox1.selectionColor=color.Red；

隸屬18按鈕；在註冊click事件後，RichTextBox1.selectionFont=new font（“隸屬”，18）；

楷書18按鈕；在註冊事件後，RichTextBox1.selectionFont=new font

項目符號；在註冊事件後，RichTextBox1.selectionBullet=true；

底紋；在註冊事件後，RichTextBox1.selectionBackColor=color.gray；//底紋就是背景顏色

復原：//要看看richtextbox以前的字體是什麽的，之後直接賦值就好了

RichTextBox1.selectionFont=new font（“宋體”，15）；

RichTextBox1.selectionColor=color.white；//上面所有的都要寫回來

private void blue_Click(object sender, EventArgs e)

{

//richb.選擇顏色=顏色中的藍色

Richb.SelectionColor = Color.Blue;

}

private void red_Click(object sender, EventArgs e)

{

Richb.SelectionColor = Color.Red;

}

private void fontKt18_Click(object sender, EventArgs e)

{

Richb.SelectionFont = new Font("楷書",18);

}

private void micr20_Click(object sender, EventArgs e)

{

Richb.SelectionFont = new Font("微軟雅黑", 18);

}

private void DWbut_Click(object sender, EventArgs e)

{

Richb.SelectionBackColor = Color.Yellow;

}

private void resat_Click(object sender, EventArgs e)

{

Richb.SelectionBackColor = Color.White;

Richb.SelectionColor = Color.Black;

Richb.SelectionFont = new Font("宋體",9);

}

     private void blue_Click(object sender, EventArgs e)
        {
            //richb.選擇顏色=顏色中的藍色
            Richb.SelectionColor = Color.Blue;
        }

        private void red_Click(object sender, EventArgs e)
        {
            Richb.SelectionColor = Color.Red;
        }

        private void fontKt18_Click(object sender, EventArgs e)
        {
            Richb.SelectionFont = new Font("楷書",18);
        }

        private void micr20_Click(object sender, EventArgs e)
        {
            Richb.SelectionFont = new Font("微軟雅黑", 18);
        }

        private void DWbut_Click(object sender, EventArgs e)
        {
            Richb.SelectionBackColor = Color.Yellow;
        }

        private void resat_Click(object sender, EventArgs e)
        {
            Richb.SelectionBackColor = Color.White;
            Richb.SelectionColor = Color.Black;
            Richb.SelectionFont = new Font("宋體",9);
        }

RichTextBox控件