public  void SetGridViewWidth(GridView gridview1)         {             int rowcount = gridview1.Rows.Count;   //行数             int colcount = gridview1.Columns.Count;  //列数             int i=0,j=0;             int[] cellwidth = new int[colcount];   //数组用来存储各个列的最大字符数             int gridviewwidth = 0;  //GridView宽度             Unit width = 0;              string temp = null;             int tempLength = 0;             for (i = 0; i < rowcount; i++)     //循环数据项，获得各个列的最大字符宽度             {                 for (j = 0; j < colcount; j++)                 {                     temp = gridview1.Rows[i].Cells[j].Text;                     tempLength = LengthOfLetter(temp);      //LengthOfLetter()返回含中文的字符串字符宽度，1个汉字2个字符宽                     if (cellwidth[j] < tempLength)                     {                         cellwidth[j] = tempLength;        //存储较大宽度值                     }                 }             }                        for (j = 0; j < colcount; j++)             {                 if (gridview1.HeaderRow.Visible == true)      //如果GridView表头可见，将表头列宽参与比较                {                     temp = gridview1.HeaderRow.Cells[j].Text;                     tempLength = LengthOfLetter(temp);                     if (cellwidth[j] < tempLength)                     {                         cellwidth[j] = tempLength;                     }                 }                 if (gridview1.FooterRow.Visible == true)    //如果GridView表尾可见，将表尾列宽参与比较                {                     temp = gridview1.FooterRow.Cells[j].Text;                     tempLength = LengthOfLetter(temp);                     if (cellwidth[j] < tempLength)                     {                         cellwidth[j] = tempLength;                     }                 }             }             for (j = 0; j < colcount; j++)             {                 if (gridview1.Columns[j].Visible == true)     //将显示的列的各列最大字符宽度相加                {                     gridviewwidth += cellwidth[j];                 }             }             width = gridviewwidth * oneLetterLength;  //GridView最大字符数乘于一个字符显示宽度得到GridView显示宽度             if (gridview1.Width.Value < width.Value)    //如果在界面上已经设置了GridView的宽度，将动态求的宽度和页面上的                {                                                              //初始化宽度比较，如果初始化宽度较小则将宽度设置为新调整的宽度。                      gridview1.Width = width;                 }         }          //含有中文的字符串等效英文字符串显示长度         public  int LengthOfLetter(string temp)          {             int length = temp.Length;             int newlength = temp.Length;             for (int i = 0; i < length; i++)         //遍历字符串每个字符             {                 if (IsChineseLetter(temp, i))     //IsChineseLetter()判断是否为中文字符，是则宽度加1                 {                     newlength++;                 }             }             return newlength;         }    //判断是否为中文字符      public  bool  IsChineseLetter(string input,int index)         {             int code = 0;             int chfrom = Convert.ToInt32("4e00", 16);    //范围（0x4e00～0x9fff）转换成int（chfrom～chend）             int chend = Convert.ToInt32("9fff", 16);             if (input != "")             {                 code = Char.ConvertToUtf32(input, index);    //获得字符串input中指定索引index处字符unicode编码                if (code >= chfrom && code <= chend)                    {                     return true;     //当code在中文范围内返回true                 }                else                {                      return false ;    //当code不在中文范围内返回false                }             }             return false;         }