网页html格式导出Excel.xls

1.创建excel方法

 /// 

        /// 创建Excel表格
        /// 
        /// 数据流
        /// 文件名称
        public static void CreateExcel(DataTable dt, string FileName)
        {
            StringBuilder strb = new StringBuilder();

            strb.Append(" ");

            strb.Append("xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");

            strb.Append("xmlns=\"http://www.w3.org/TR/REC-html40\">");

            strb.Append("  ");

            strb.Append(" ");

            strb.Append(" ");

            strb.Append(" ");

            strb.Append("  ");

            strb.Append("  ");

            strb.Append("    Sheet1 ");

            strb.Append("    ");

            strb.Append("    285 ");

            strb.Append("    ");

            strb.Append("    ");

            strb.Append("      ");

            strb.Append("      3 ");

            strb.Append("      1 ");

            strb.Append("      ");

            strb.Append("    ");

            strb.Append("    False ");

            strb.Append("    False ");

            strb.Append("    False ");

            strb.Append("    ");

            strb.Append("  ");

            strb.Append("  6750 ");

            strb.Append("  10620 ");

            strb.Append("  480 ");

            strb.Append("  75 ");

            strb.Append("  False ");

            strb.Append("  False ");

            strb.Append(" ");

            strb.Append(" ");

            strb.Append("");

            strb.Append("   ");





            //写列标题    int columncount = dt.Columns.Count;

            for (int columi = 0; columi < columncount; columi++)
            {

                strb.Append(" ");

            }

            strb.Append(" ");

            //写数据    for (int i = 0; i < dt.Rows.Count; i++)
            {

                strb.Append(" ");

                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    strb.Append(" ");
                }

                strb.Append(" ");
            }

            strb.Append(" 
 


            
 " + dt.Columns[columi] + "  


            
" + dt.Rows[i][j].ToString() + " ");


            strb.Append("  ");


            HttpContext.Current.Response.Clear();

            HttpContext.Current.Response.Buffer = true;

            HttpContext.Current.Response.Charset = "GB2312";

            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);

            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文    

            HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。    

            HttpContext.Current.Response.Write(strb);

            HttpContext.Current.Response.End();

        }

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2.List集合转DateTable，根据属性特性[System.ComponentModel.Description("列名称")]指定名称，没有指定名称列则不会导出

#region List集合转DateTable
        /// 

        /// List集合转DateTable
        /// 
        /// 泛型类
        /// 参数名
        /// 
        private DataTable ToDataTable(List items)
        {
            var tb = new DataTable(typeof(T).Name);

            List props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance).ToList();

            #region MyRegion
            //foreach (PropertyInfo prop in props)
            //{
            //    string name = "";
            //    //获取特性值
            //    object[] da = prop.GetCustomAttributes(typeof(DescriptionAttribute), false);
            //    if (da.Length != 0)
            //    {
            //        name = (da[0] as DescriptionAttribute).Description;
            //        Type t = GetCoreType(prop.PropertyType);
            //        tb.Columns.Add(name, t);
            //    }
            //    else
            //    {
            //        //name = prop.Name;

            //        props.Remove(prop);
            //    }
            //} 
            #endregion

            for (int i = 0; i < props.Count; i++)
            {
                string name = "";
                //获取特性值
                object[] da = props[i].GetCustomAttributes(typeof(DescriptionAttribute), false);
                if (da.Length != 0)
                {
                    name = (da[0] as DescriptionAttribute).Description;
                    Type t = GetCoreType(props[i].PropertyType);
                    tb.Columns.Add(name, t);
                }
                else
                {
                    //name = prop.Name;
                    props.Remove(props[i]);
                    i--;
                }
            }

            foreach (T item in items)
            {
                var values = new object[props.Count];

                for (int i = 0; i < props.Count; i++)
                {
                    values[i] = props[i].GetValue(item, null);
                }

                tb.Rows.Add(values);
            }

            return tb;
        }
        public static bool IsNullable(Type t)
        {
            return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
        }
        public static Type GetCoreType(Type t)
        {
            if (t != null && IsNullable(t))
            {
                if (!t.IsValueType)
                {
                    return t;
                }
                else
                {
                    return Nullable.GetUnderlyingType(t);
                }
            }
            else
            {
                return t;
            }
        } 
        #endregion

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3.创建数据源，调用方法

    public void UserWithdrawExcelList()
        {
            //数据源，根据自己需要来取
            List userList = UserWithdrawBLL.GetUserWithdrawListExcel(paramdic);

            DataTable dt = ToDataTable(userList);
            #region MyRegion
            //DataTable dt = new DataTable();
            //dt.Columns.Add("用户名", typeof(String));
            //dt.Columns.Add("提现标题", typeof(String));
            //dt.Columns.Add("提现总金额", typeof(String));
            //dt.Columns.Add("实际到账金额", typeof(String));
            //dt.Columns.Add("提现手续费", typeof(String));
            //dt.Columns.Add("提现账户", typeof(String));
            //dt.Columns.Add("提现状态", typeof(String));
            //dt.Columns.Add("创建时间", typeof(DateTime));
            //userList.TryForEach(t =>
            //{
            //    dt.Rows.Add(new object[] { 
            //        t.UserName,t.WithTitle,t.WithTotalAmount,t.WithAmount,t.CounterFee,t.BankCode,t.StatusName,t.AddTime
            //    });
            //}); 
            #endregion
            DataView dv = dt.DefaultView;//获取表视图
            dv.ToTable();//转为表

            DataChangeExcel.CreateExcel(dt, DateTime.Now.ToString("yyyyMMddHHmmssffff") + ".xls");
        }        

View Code