C# DataTable WriteToExcel

1：帮助类

public class ExcelHander
    {
        private string AList = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        private Workbook m_objBook;
        private Workbooks m_objBooks;
        private Application m_objExcel;
        private Missing miss = Missing.Value;
        public static Missing MissValue = Missing.Value;
        private Worksheet sheet;

        public void CloseExcelApplication()
        {
            try
            {
                foreach (Process process in Process.GetProcessesByName("excel"))
                {
                    process.Kill();
                }
            }
            catch (Exception exception)
            {
                throw new Exception(exception.Message + exception.StackTrace, exception.InnerException);
            }
        }

        public void CreateExceFile()
        {
            this.m_objExcel = new ApplicationClass();
            this.UserControl(false);
            this.m_objBooks = this.m_objExcel.Workbooks;
            this.m_objBook = this.m_objBooks.Add(this.miss);
            this.sheet = (Worksheet)this.m_objBook.ActiveSheet;
        }

        public string GetAix(int x, int y)
        {
            char[] chArray = this.AList.ToCharArray();
            if (x >= 0x1a)
            {
                return "";
            }
            string str = "";
            return (str + chArray[x - 1].ToString() + y.ToString());
        }

        public Range getRange(int x1, int y1, int x2, int y2)
        {
            return this.sheet.get_Range(this.GetAix(x1, y1), this.GetAix(x2, y2));
        }

        public object getValue(int x, int y)
        {
            return this.sheet.get_Range(this.GetAix(x, y), this.miss).Cells.get_Value(Missing.Value);
        }

        public void insertRow(int y)
        {
            Range range = this.sheet.get_Range(this.GetAix(1, y), this.GetAix(0x19, y));
            range.Copy(this.miss);
            range.Insert(XlDirection.xlDown, this.miss);
            range.get_Range(this.GetAix(1, y), this.GetAix(0x19, y));
            range.Select();
            this.sheet.Paste(this.miss, this.miss);
        }

        public void mergeCell(int x1, int y1, int x2, int y2)
        {
            this.sheet.get_Range(this.GetAix(x1, y1), this.GetAix(x2, y2)).Merge(Missing.Value);
        }

        public Worksheet NewSheet()
        {
            return (Worksheet)this.m_objBook.Worksheets.Add(Type.Missing, Type.Missing, Type.Missing, Type.Missing);
        }

        public void OpenExcelFile(string filename)
        {
            this.m_objExcel = new ApplicationClass();
            this.UserControl(false);
            this.m_objExcel.Workbooks.Open(filename, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss, this.miss);
            this.m_objBooks = this.m_objExcel.Workbooks;
            this.m_objBook = this.m_objExcel.ActiveWorkbook;
            this.sheet = (Worksheet)this.m_objBook.ActiveSheet;
        }

        public void past()
        {
            string link = "a,b,c,d,e,f,g";
            this.sheet.Paste(this.sheet.get_Range(this.GetAix(10, 10), this.miss), link);
        }

        public void ReleaseExcel()
        {
            this.m_objExcel.Quit();
            Marshal.ReleaseComObject(this.m_objExcel);
            Marshal.ReleaseComObject(this.m_objBooks);
            Marshal.ReleaseComObject(this.m_objBook);
            Marshal.ReleaseComObject(this.sheet);
            GC.Collect();
        }

        public void SaveAs(string FileName)
        {
            this.m_objBook.SaveAs(FileName, this.miss, this.miss, this.miss, this.miss, this.miss, XlSaveAsAccessMode.xlNoChange, XlSaveConflictResolution.xlLocalSessionChanges, this.miss, this.miss, this.miss, this.miss);
            this.m_objBook.Close(false, this.miss, this.miss);
        }

        public void setBorder(int x1, int y1, int x2, int y2, int Width)
        {
            this.sheet.get_Range(this.GetAix(x1, y1), this.GetAix(x2, y2)).Borders.Weight = Width;
        }

        public void setValue(int x, int y, string text)
        {
            this.sheet.get_Range(this.GetAix(x, y), this.miss).set_Value(this.miss, text);
        }

        public void setValue(int x, int y, string text, System.Drawing.Font font, Color color)
        {
            this.setValue(x, y, text);
            Range range = this.sheet.get_Range(this.GetAix(x, y), this.miss);
            range.Font.Size = font.Size;
            range.Font.Bold = font.Bold;
            range.Font.Color = color;
            range.Font.Name = font.Name;
            range.Font.Italic = font.Italic;
            range.Font.Underline = font.Underline;
        }

        public void UserControl(bool usercontrol)
        {
            if (this.m_objExcel != null)
            {
                this.m_objExcel.UserControl = usercontrol;
                this.m_objExcel.DisplayAlerts = usercontrol;
                this.m_objExcel.Visible = usercontrol;
            }
        }

        public Worksheet CurrentSheet
        {
            get
            {
                return this.sheet;
            }
            set
            {
                this.sheet = value;
            }
        }

        public Workbook CurrentWorkBook
        {
            get
            {
                return this.m_objBook;
            }
            set
            {
                this.m_objBook = value;
            }
        }

        public Workbooks CurrentWorkBooks
        {
            get
            {
                return this.m_objBooks;
            }
            set
            {
                this.m_objBooks = value;
            }
        }
    }

2：实现方法

public static void WirteToExcel()
        {
            if (ConfigReader.ReportTable.Rows.Count > 0)
            {
                ExcelHander excelwirter = new ExcelHander();
                int allNum = ConfigReader.ReportTable.Rows.Count;//统计下载总数
                int resultfulNum = ConfigReader.ReportTable.Select("连接状态='有 效'").Length;//有效的下载连接数
                int errorNum = ConfigReader.ReportTable.Select("连接状态='无 效'").Length;//无效的下载连接数
                try
                {
                    excelwirter.CreateExceFile();
                    #region  写入细节
                    int i = 1;
                    int j = 1;
                    foreach (var item in ConfigReader.ReportTable.Columns)
                    {
                        excelwirter.setValue(j, 1, ConfigReader.ReportTable.Columns[j - 1].ToString(), new System.Drawing.Font("TimesNewRoman", 12, FontStyle.Bold), Color.Black);
                        j++;
                    }
                    i = 2;
                    j = 1;
                    foreach (DataRow dr in ConfigReader.ReportTable.Rows)
                    {
                        if (dr[2].ToString() == "无 效")
                        {
                            excelwirter.setValue(1, i, dr[0].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Red);
                            excelwirter.setValue(2, i, dr[1].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Red);
                            excelwirter.setValue(3, i, dr[2].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Red);
                            excelwirter.setValue(4, i, dr[3].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Red);
                        }
                        else
                        {
                            excelwirter.setValue(1, i, dr[0].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Black);
                            excelwirter.setValue(2, i, dr[1].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Black);
                            excelwirter.setValue(3, i, dr[2].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Black);
                            excelwirter.setValue(4, i, dr[3].ToString(), new System.Drawing.Font("TimesNewRoman", 10, FontStyle.Regular), Color.Black);
                        }
                        i++;
                    }
                    #endregion
                    #region//写入汇总
                    excelwirter.setValue(1, ++i, "下载总数：" + allNum.ToString(), new System.Drawing.Font("TimesNewRoman", 12, FontStyle.Bold), Color.Black);
                    excelwirter.setValue(1, ++i, "连接状态正常数：" + resultfulNum.ToString(), new System.Drawing.Font("TimesNewRoman", 12, FontStyle.Bold), Color.Black);
                    excelwirter.setValue(1, ++i, "连接异常数：" + errorNum.ToString(), new System.Drawing.Font("TimesNewRoman", 12, FontStyle.Bold), Color.Black);
                    #endregion
                    excelwirter.SaveAs(ConfigReader.WorkingPath + "report.xlsx");
                }
                catch (Exception)
                {
                    Console.WriteLine("写入异常，请确定excel文件没有被独占");
                }
                finally
                {
                    excelwirter.ReleaseExcel();
                    excelwirter.CloseExcelApplication();
                }
            }
        }