字符串处理 笔记
#region 输出字符串
/// <summary>
/// 返回于编辑的字符串并进行html解码
/// </summary>
/// <param name="instr">要输出的字符串</param>
/// <returns></returns>
public static string OutString(string instr)
{
instr = HttpContext.Current.Server.HtmlDecode(instr);
instr = instr.Replace("<br />" + Environment.NewLine, Environment.NewLine);
return instr;
}
/// <summary>
/// 返回用于显示的字符串并删除超过限定字数的字符
/// </summary>
/// <param name="instr">要输出的文本</param>
/// <param name="wordCount">要输出的字数</param>
/// <returns></returns>
public static string OutString(string instr, int wordCount)
{
byte[] mybyte = System.Text.Encoding.Default.GetBytes(instr);
if (mybyte.Length > wordCount)
{
outstr = new StringBuilder();
for (int i; i < instr.Length; i++)
{
byte[] tempByte = System.Text.Encoding.Default.GetBytes(outstr.ToString());
if (tempByte.Length < wordCount * 2)
{
outstr.Append(instr.Substring(i, 1));
}
else
{
break;
}
}
return outstr.ToString();
}
else
{
return instr;
}
}
/// <summary>
/// 返回用于显示的字符串并用省略号代替超过限定字数的字符
/// </summary>
/// <param name="instr">要输出的文本</param>
/// <param name="WordCount">要输出的字数</param>
/// <param name="Prolong">要代替的符号</param>
/// <returns></returns>
public static string OutString(string instr, int WordCount, bool Prolong)
{
byte[] mybyte = System.Text.Encoding.Default.GetBytes(instr);
if (mybyte.Length > WordCount)
{
outstr = new StringBuilder();
for (int i = 0; i < instr.Length; i++)
{
byte[] tempByte = System.Text.Encoding.Default.GetBytes(outstr.ToString());
if (tempByte.Length < WordCount * 2)
{
outstr.Append(instr.Substring(i, 1));
}
else
{
if (Prolong)
{
outstr.Append("...");
}
break;
}
}
return outstr.ToString();
}
else
{
return instr;
}
}
#endregion