指定全部显示不同颜色：
public void SetTextContent(string text, ColorEnum color)
{
Font font = new Font("微软雅黑", , FontStyle.Bold);
richTextBox1.Font = font;
richTextBox1.Text = text;
richTextBox1.ReadOnly = true;
layoutControlItem2.Selected = true;
SendKeys.Send("{Tab}"); //向活动应用程序发送击键 注意格式：Send("{Tab}");中的{}
switch (color)
{
case ColorEnum.Blue:
this.Text = "警告信息";
richTextBox1.ForeColor = Color.Blue;
break;
case ColorEnum.Red:
this.Text = "错误信息";
richTextBox1.ForeColor = Color.Red;
break;
default:
this.Text = "提示信息";
richTextBox1.ForeColor = Color.Black;
break;
}
}
public enum ColorEnum
{
Black = ,
Blue = ,
Red =
}
指定内容中指定文字高亮显示：
private void SetHighlightContent(string text)
{
ColorEnum color = ColorEnum.Black;
string content = string.Empty;
List<string> findList = new List<string>();
if (text.IndexOf("#Red#", StringComparison.Ordinal) > )
{
color = ColorEnum.Red;
var contentArray = text.Split(new[] { "#Red#" }, StringSplitOptions.None);
content = contentArray[];
var findstrs = contentArray[];
findList = GetFindList(findstrs);
}
else if (text.IndexOf("#Blue#", StringComparison.Ordinal) > )
{
color = ColorEnum.Blue;
var contentArray = text.Split(new[] { "#Blue#" }, StringSplitOptions.None);
content = contentArray[];
var findstrs = contentArray[];
findList = GetFindList(findstrs);
}
SetHighlight(content, findList, color);
} /// <summary>
/// 多个要高亮关键词显示的用'&'连接
/// </summary>
/// <param name="findstrs"></param>
/// <returns></returns>
private List<string> GetFindList(string findstrs)
{
List<string> findList;
if (findstrs.IndexOf("&", StringComparison.Ordinal) > )
{
findList = findstrs.Split('&').ToList();
}
else
{
findList = new List<string>() { findstrs };
}
return findList;
} private void SetHighlight(string content, List<string> findList, ColorEnum color)
{
if (!string.IsNullOrEmpty(content))
{
if (findList.IsHasRow())
{
Font font = new Font("微软雅黑", , FontStyle.Bold);
richTextBox1.Font = font;
richTextBox1.Text = content;
this.Text = @"提示信息";
richTextBox1.ReadOnly = true;
foreach (var findItem in findList)
{
List<int> findStrIndexes = GetFindStrIndexes(content, findItem);
foreach (var itemindex in findStrIndexes)
{
richTextBox1.Select(itemindex, findItem.Length);
switch (color)
{
case ColorEnum.Blue:
richTextBox1.SelectionColor = Color.Blue;
break;
case ColorEnum.Red:
richTextBox1.SelectionColor = Color.Red;
break;
}
}
}
richTextBox1.SelectionStart = richTextBox1.Text.Length; //取消选中
layoutControlItem2.Selected = true;
SendKeys.Send("{Tab}"); //向活动应用程序发送击键 注意格式：Send("{Tab}");中的{}
}
else
{
SetTextContent(content, color);
}
}
} private List<int> GetFindStrIndexes(string content, string findStr)
{
List<int> result = new List<int>();
int start = ;
while (start < content.Length)
{
int index = content.IndexOf(findStr, start, StringComparison.Ordinal);
if (index >= )
{
result.Add(index);
start = index + findStr.Length;
}
else
{
break;
}
}
return result;
}
参考：
http://www.cnblogs.com/KardelXiao/p/4236045.html （C#）RichTextBox控件 链接跳转设置
http://blog.csdn.net/crazytaliban/article/details/52002657 RichTextBox用法——设置指定字符串的颜色