richtext控件如何实现在输入的字符是指定的某一类型的字符串显示不同颜色

Question

给一些相关的语句,自己打理吧
int currentIndex;richtext.text.IndexOf("mytype",currentIndex,ricthtext.txt.length-currentIndex);rtbox_MessageHistory.AppendTextAsRtf("test",   new Font(this.Font, FontStyle.Bold), RtfColor.Blue, RtfColor.Yellow);

Answer 1

你要做两个工作，一是判断输入的是否为关键字，二才是显示样式，如果仅仅是不知道显示样式怎么控制的话，查查MSDN就知道了

Answer 2

//每输入一行字符就改变颜色
///
///str：要输入的字符
///wc ：字符的颜色
private void WriteLine(string str,Color wc)
{
string Style ;
richTextBox1.SelectionStart = 0;
richTextBox1.SelectionLength =richTextBox1.Text.Length ;
Style=richTextBox1.SelectedRtf;
richTextBox1.Text = str+"\r\n";
richTextBox1.SelectedRtf=Style;
if(wc != Color.Transparent)
{
richTextBox1.SelectionStart =richTextBox1.Text.Length -str.Length -1;
richTextBox1.SelectionLength = str.Length+1;
richTextBox1.SelectionColor = wc;
}
}

Answer 3

string[] KeyWords = 
                 {  "select",
                    "insert",
                    "update",
"delete",
                    "create",
                    "table",
                    "union",
                    "from",
                    "where",
"=",
                    "<>",
                     "(",
                     ")",
                    "in",
                    "and",
            "or",
            "set",
            "values",
            "into",
            "int",
    "char",
            "date",
"drop",
"commit",
"rollback"
 };
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++/// <summary>
/// 对关键字进行字体设置
/// </summary>
/// <param name="pSql"></param>
/// <returns></returns>
private void SetTextFormat()
{
string m_sql = CommandRTextBox.Text.ToLower();
int SelPos = CommandRTextBox.SelectionStart;
for(int i = 0; i < KeyWords.Length;i++)
{
try
{
CommandRTextBox.SelectionStart = m_sql.IndexOf(KeyWords[i]);
}
catch
{
continue;
} CommandRTextBox.SelectionLength = KeyWords[i].Length;
CommandRTextBox.SelectionFont
= new System.Drawing.Font("黑体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
CommandRTextBox.SelectionColor = System.Drawing.Color.Blue;
}
CommandRTextBox.Select(SelPos,0);
CommandRTextBox.SelectionColor = System.Drawing.Color.Black;
}

Answer 4

http://search.csdn.net/Expert/topic/2112/2112690.xml?temp=.1628992