●c#使用正则表达式

using System.Text.RegularExpressions;

string drugComment = "药品价格及供应商:1.3,0001,药品供应商; 其他";  //字符串格式示例：价格，供应商代码，供应商名称

//正则截取
Regex regSupply = new Regex(@"供应商代码（\d*）");  //定义供应商正则表达式
Match matSupply = regSupply.Match(drugComment);  //根据正则表达式，从字符串中截取供应商信息

string matSupplyCode = matSupply.Groups[0].ToString();
if (matSupplyCode.Length > 7)  //如果有供货商代码，需要验证
{
string strSupplyCode = matSupplyCode.Substring(6, matSupplyCode.Length - 7);  //截取供应商代码
}
else
new CustMsgBoxWindow().Show(msg: "区域药品备注中无供应商代码！");

//正则匹配
Regex reg = new Regex(@"^药品价格及供应商:(\d{1,}\.\d{1,}|\d{1,}),\d{1,},\S{1,};"); //用正则表达式验证药品备注中的进价及供应商格式
if (reg.IsMatch(drugComment))
{
string strYPBZ = drugComment.Substring(drugComment.IndexOf(";") + 1);
string strPriceAddSupply = drugComment.Substring(drugComment.IndexOf(":") + 1, drugComment.IndexOf(";") - drugComment.IndexOf(":") - 1);
string[] strPAS = strPriceAddSupply.Split(',');
}
else
tbYPBZ.Text = drugComment;

//正则替换
Regex reg = new Regex(@"^药品价格及供应商\((\d*\.\d*|\d*),\d*,\S*\);"); //用正则表达式验证药品备注中的进价及供应商格式
if (reg.IsMatch(strYPBZ))
strYPBZ = reg.Replace(strYPBZ, strPriceAddSupply);  //strPriceAddSupply替换strYPBZ中符合格式的字符串片段
else
strYPBZ = strPriceAddSupply + "  " + strYPBZ;

tbYPBZ.Text = strYPBZ;