C#實現中文簡繁體互換

來源:互聯網
上載者:User
using System;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Web;

/// <summary>
/// CG2BFilter 的摘要說明
/// </summary>
public class CG2BFilter : Stream
{
    Stream responseStream;
    long position;
    StringBuilder responseHtml;

    public CG2BFilter(Stream inputStream)
    {
        responseStream = inputStream;
        responseHtml = new StringBuilder();
    }

    #region   Filter   overrides
    public override bool CanRead
    {
        get { return true; }
    }

    public override bool CanSeek
    {
        get { return true; }
    }

    public override bool CanWrite
    {
        get { return true; }
    }

    public override void Close()
    {
        responseStream.Close();
    }

    public override void Flush()
    {
        responseStream.Flush();
    }

    public override long Length
    {
        get { return 0; }
    }

    public override long Position
    {
        get { return position; }
        set { position = value; }
    }

    public override long Seek(long offset, SeekOrigin origin)
    {
        return responseStream.Seek(offset, origin);
    }

    public override void SetLength(long length)
    {
        responseStream.SetLength(length);
    }

    public override int Read(byte[] buffer, int offset, int count)
    {
        return responseStream.Read(buffer, offset, count);
    }
    #endregion

    #region   轉換任務
    public override void Write(byte[] buffer, int offset, int count)
    {
        string strBuffer = System.Text.UTF8Encoding.UTF8.GetString(buffer, offset, count);
        string finalHtml = Simplified2Traditional(strBuffer);
        byte[] data = System.Text.UTF8Encoding.UTF8.GetBytes(finalHtml);
        responseStream.Write(data, 0, data.Length);

    }

    #endregion
    #region   自訂函數
    public string Traditional2Simplified(string str)
    {  
        return (Microsoft.VisualBasic.Strings.StrConv(str, Microsoft.VisualBasic.VbStrConv.SimplifiedChinese, 0));

    }
    public string Simplified2Traditional(string str)
    {  
        return (Microsoft.VisualBasic.Strings.StrConv(str as String, Microsoft.VisualBasic.VbStrConv.TraditionalChinese, 0));

    }
    #endregion
    

    //Response.Filter = new CG2BFilter(Response.Filter);在ASPX.CS頁面裡調用
}

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