使用ActiveReports 实现在报表中将数字转换为中文大小写功能

有很多中国式报表如订单，发货单，需要显示金额，而往往数据库中存储的都是数字格式，所以就需要在报表显示时将数字转换为中文大小写。

那今天我们就来学习下，如何在ActiveReports中将数字转换为中文大写的功能。

1. 在报表中直接编写脚本函数

1.1 新建RDL 报表，在脚本选项卡中添加函数

Function ConvertToRMB(ByVal inputString As String) As String
        Dim numList As String = "零壹贰叁肆伍陆柒捌玖"
        Dim rmbList As String = "分角元拾佰仟万拾佰仟亿拾佰仟万"
        Dim number As Double = 0
        Dim tempOutString As String = ""
        number = Double.Parse(inputString)


        Dim tempNumberString As String = Convert.ToInt64(number * 100).ToString()
        Dim tempNmberLength As Integer = tempNumberString.Length
        Dim i As Integer = 0

        While i < tempNmberLength  
                Dim oneNumber As Integer = Int32.Parse(tempNumberString.Substring(i, 1))
                Dim oneNumberChar As String = numList.Substring(oneNumber, 1)
                Dim oneNumberUnit As String = rmbList.Substring(tempNmberLength - i - 1, 1)
                If Not (oneNumberChar = "零") Then
                        tempOutString += oneNumberChar + oneNumberUnit
                Else
                        If oneNumberUnit = "亿" OrElse oneNumberUnit = "万" OrElse oneNumberUnit = "元" OrElse oneNumberUnit = "零" Then
                                While tempOutString.EndsWith("零")
                                        tempOutString = tempOutString.Substring(0, tempOutString.Length - 1)
                                End While
                        End If
                        If oneNumberUnit = "亿" OrElse (oneNumberUnit = "万" AndAlso Not tempOutString.EndsWith("亿")) OrElse oneNumberUnit = "元" Then
                                tempOutString += oneNumberUnit
                        Else
                                If Not tempOutString Is Nothing Then
                                        Dim tempEnd As Boolean = tempOutString.EndsWith("亿")
                                        Dim zeroEnd As Boolean = tempOutString.EndsWith("零")
                                        If tempOutString.Length > 1 Then
                                                Dim zeroStart As Boolean = tempOutString.Substring(tempOutString.Length - 2, 2).StartsWith("零")
                                                If Not zeroEnd AndAlso (zeroStart OrElse Not tempEnd) Then
                                                        tempOutString += oneNumberChar
                                                End If
                                        Else
                                                If Not zeroEnd AndAlso Not tempEnd Then
                                                        tempOutString += oneNumberChar
                                                End If
                                        End If
                                End If

                        End If
                End If
                i += 1

        End While
        If Not tempOutString Is Nothing Then
                While tempOutString.EndsWith("零")
                        tempOutString = tempOutString.Substring(0, tempOutString.Length - 1)
                End While
                While tempOutString.EndsWith("元")
                        tempOutString = tempOutString + "整"
                End While
                Return tempOutString
        Else
                Return ""
        End If
End Function

1.2 在单元格中调用，以Code.函数名的格式调用。

=Code.ConvertToRMB()

2 在程序中添加大小写转换类

2.1 新建类

DigitToChnText.cs

编写转换函数：

        public string CmycurD1(decimal num)
        {
            string str1 = "零壹贰叁肆伍陆柒捌玖";            //0-9所对应的汉字
            string str2 = "万仟佰拾亿仟佰拾万仟佰拾元角分"; //数字位所对应的汉字
            string str3 = "";    //从原num值中取出的值
            string str4 = "";    //数字的字符串形式
            string str5 = "";  //人民币大写金额形式
            int i;    //循环变量
            int j;    //num的值乘以100的字符串长度
            string ch1 = "";    //数字的汉语读法
            string ch2 = "";    //数字位的汉字读法
            int nzero = 0;  //用来计算连续的零值是几个
            int temp;            //从原num值中取出的值

            num = Math.Round(Math.Abs(num), 2);    //将num取绝对值并四舍五入取2位小数
            str4 = ((long)(num * 100)).ToString();        //将num乘100并转换成字符串形式
            j = str4.Length;      //找出最高位
            if (j > 15) { return "溢出"; }
            str2 = str2.Substring(15 - j);   //取出对应位数的str2的值。如：200.55,j为5所以str2=佰拾元角分

            //循环取出每一位需要转换的值
            for (i = 0; i < j; i++)
            {
                str3 = str4.Substring(i, 1);          //取出需转换的某一位的值
                temp = Convert.ToInt32(str3);      //转换为数字
                if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
                {
                    //当所取位数不为元、万、亿、万亿上的数字时
                    if (str3 == "0")
                    {
                        ch1 = "";
                        ch2 = "";
                        nzero = nzero + 1;
                    }
                    else
                    {
                        if (str3 != "0" && nzero != 0)
                        {
                            ch1 = "零" + str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                    }
                }
                else
                {
                    //该位是万亿，亿，万，元位等关键位
                    if (str3 != "0" && nzero != 0)
                    {
                        ch1 = "零" + str1.Substring(temp * 1, 1);
                        ch2 = str2.Substring(i, 1);
                        nzero = 0;
                    }
                    else
                    {
                        if (str3 != "0" && nzero == 0)
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            if (str3 == "0" && nzero >= 3)
                            {
                                ch1 = "";
                                ch2 = "";
                                nzero = nzero + 1;
                            }
                            else
                            {
                                if (j >= 11)
                                {
                                    ch1 = "";
                                    nzero = nzero + 1;
                                }
                                else
                                {
                                    ch1 = "";
                                    ch2 = str2.Substring(i, 1);
                                    nzero = nzero + 1;
                                }
                            }
                        }
                    }
                }
                if (i == (j - 11) || i == (j - 3))
                {
                    //如果该位是亿位或元位，则必须写上
                    ch2 = str2.Substring(i, 1);
                }
                str5 = str5 + ch1 + ch2;

                if (i == j - 1 && str3 == "0")
                {
                    //最后一位（分）为0时，加上“整”
                    str5 = str5 + '整';
                }
            }
            if (num == 0)
            {
                str5 = "零元整";
            }
            return str5;
        }

2.2 在实例化报表对象时，添加类

  pageReport.Report.Classes.Add(new GrapeCity.ActiveReports.PageReportModel.CodeClass() { ClassName = "WebApplication8.DigitToChnText", InstanceName = "dtc1" });