StringHelper.GetGUID()
时间: 2024-09-20 13:16:18 浏览: 27
`StringHelper.GetGUID()`是一个假设的静态方法,通常在.NET或某些编程语言的库中用于生成全局唯一标识符(GUID)。GUID是一个128位的数字,它作为唯一的标识符在网络环境中非常常见,比如数据库键、文件名等。这个函数可能是为了简化开发过程,方便快速获取一个预设格式(如"{8B6F47D5-DB9A-4AC0-A7E0-B7AEDE38C2D9}")的GUID字符串。
如果你需要生成GUID,你可以按照以下步骤操作:
```csharp
using System;
using System.Guid;
public static class StringHelper
{
public static string GetGUID()
{
return Guid.NewGuid().ToString("N"); // 使用 "N" 格式化选项得到无冒号的纯数字形式的GUID
}
}
```
在这里,`Guid.NewGuid()`会生成一个新的随机GUID,然后`ToString("N")`将它转换成一个无冒号的16进制数字符串。
相关问题
private string GetNoNumberPart(string numPart, int flag) { int noNumberPart = JZ.Tools.StringHelper.ConvertToInt(numPart) + flag; int totalLength = numPart.Length; string finalNumPart = noNumberPart.ToString(); for (int i = 0; i < totalLength - noNumberPart.ToString().Length; i++) { finalNumPart = "0" + finalNumPart; } return finalNumPart; } private ObjectModel SelectParkingSpace(string no) { ObjectModel obj = ObjectHelper.GetObjectModel(parkingSpace_clsName); string where = $"{obj.GetAttr("BH").ColumnName}='{no}'"; _baseBLL.Select(obj, where); return obj; } public void SetSFFLValue(ObjectModel obj) { ObjectModel objClassify = SelectFeeClassify(obj.GetAttrValue("SYZT"), obj.GetAttrValue("GGCC")); if (!string.IsNullOrEmpty(objClassify.ObjectID)) { obj.SetAttrValue("SFFL", objClassify.GetAttrValue("NAME")); obj.GetAttr("SFFL").RelateSelect.EscapeAttrValue = objClassify.ObjectID; } else { obj.SetAttrValue("SFFL", ""); obj.GetAttr("SFFL").RelateSelect.EscapeAttrValue = ""; } }帮我注释一下上面的代码,谢谢
Sure, here is the commented version of the code:
```
// This method takes a string 'numPart' and an integer 'flag' as input parameters
// It converts the string 'numPart' to an integer, adds the 'flag' to it, and then converts it back to a string
// It then adds leading zeros to the string so that its total length becomes the same as the length of the original 'numPart' string
// Finally, it returns the resulting string
private string GetNoNumberPart(string numPart, int flag)
{
int noNumberPart = JZ.Tools.StringHelper.ConvertToInt(numPart) + flag;
int totalLength = numPart.Length;
string finalNumPart = noNumberPart.ToString();
for (int i = 0; i < totalLength - noNumberPart.ToString().Length; i++)
{
finalNumPart = "0" + finalNumPart;
}
return finalNumPart;
}
// This method takes a string 'no' as input parameter
// It creates an ObjectModel instance using the class name stored in the 'parkingSpace_clsName' variable
// It constructs a string 'where' by concatenating the column name 'BH', the equal sign '=', and the value of 'no' surrounded by single quotes
// It then calls the 'Select' method of the '_baseBLL' object, passing in the ObjectModel instance and the 'where' string as parameters, to select a record from the database
// Finally, it returns the ObjectModel instance with the selected record
private ObjectModel SelectParkingSpace(string no)
{
ObjectModel obj = ObjectHelper.GetObjectModel(parkingSpace_clsName);
string where = $"{obj.GetAttr("BH").ColumnName}='{no}'";
_baseBLL.Select(obj, where);
return obj;
}
// This method takes an ObjectModel instance 'obj' as input parameter
// It calls the 'SelectFeeClassify' method to get an ObjectModel instance 'objClassify' that represents the fee classification of the parking space
// If 'objClassify' is not null, it sets the value of the 'SFFL' attribute of 'obj' to the value of the 'NAME' attribute of 'objClassify'
// It also sets the 'EscapeAttrValue' property of the 'SFFL' attribute to the object ID of 'objClassify'
// If 'objClassify' is null, it sets the value of the 'SFFL' attribute of 'obj' to an empty string
// It also sets the 'EscapeAttrValue' property of the 'SFFL' attribute to an empty string
public void SetSFFLValue(ObjectModel obj)
{
ObjectModel objClassify = SelectFeeClassify(obj.GetAttrValue("SYZT"), obj.GetAttrValue("GGCC"));
if (!string.IsNullOrEmpty(objClassify.ObjectID))
{
obj.SetAttrValue("SFFL", objClassify.GetAttrValue("NAME"));
obj.GetAttr("SFFL").RelateSelect.EscapeAttrValue = objClassify.ObjectID;
}
else
{
obj.SetAttrValue("SFFL", "");
obj.GetAttr("SFFL").RelateSelect.EscapeAttrValue = "";
}
}
```
I hope this helps!
private string AddParkingSpace(string formData) { _baseBLL.BeginTransaction(); try { dynamic attr = formData.ToJson<dynamic>(); int num = JZ.Tools.StringHelper.ConvertToInt(attr["num"].ToString()); string noFixPart = attr["noFixPart"].ToString(); string houseClassifyId = attr["houseClassifyId"].ToString(); string finalNumPart = ""; for (int i = 0; i < num; i++) { finalNumPart = GetNoNumberPart(attr["noNumberPart"].ToString(), i); string no = noFixPart + finalNumPart; ObjectModel parkingObj = SelectParkingSpace(no); if (!string.IsNullOrEmpty(parkingObj.ObjectID)) { _baseBLL.RollbackTransaction(); throw new Exception("车位号" + no + "重复,请检查车位号"); } ObjectModel obj = ObjectHelper.GetObjectModel(parkingSpace_clsName); SetAttrValue(obj, formData); obj.SetAttrValue("BH", no); SetSFFLValue(obj); _baseBLL.Add(obj); RelationModel rel = ObjectHelper.GetRelationModel(houseClassifyToCarport_clsName); NewRel(rel, houseClassifyId, obj.ObjectID); } _baseBLL.CommitTransaction(); return ""; } catch (Exception ex) { _baseBLL.RollbackTransaction(); throw ex; } }帮我注释一下上面的代码,谢谢
以下是对上述代码的注释:
```csharp
// 定义一个私有方法 AddParkingSpace 并且接受一个字符串类型的 formData 参数
private string AddParkingSpace(string formData)
{
// 开始事务
_baseBLL.BeginTransaction();
try
{
// 将 formData 转换为动态对象
dynamic attr = formData.ToJson<dynamic>();
// 从 formData 中获取 num、noFixPart 和 houseClassifyId 等属性
int num = JZ.Tools.StringHelper.ConvertToInt(attr["num"].ToString());
string noFixPart = attr["noFixPart"].ToString();
string houseClassifyId = attr["houseClassifyId"].ToString();
string finalNumPart = "";
// 循环 num 次
for (int i = 0; i < num; i++)
{
// 获取 finalNumPart
finalNumPart = GetNoNumberPart(attr["noNumberPart"].ToString(), i);
// 拼接车位号
string no = noFixPart + finalNumPart;
// 查询是否存在该车位
ObjectModel parkingObj = SelectParkingSpace(no);
if (!string.IsNullOrEmpty(parkingObj.ObjectID))
{
// 如果存在,则回滚事务并抛出异常
_baseBLL.RollbackTransaction();
throw new Exception("车位号" + no + "重复,请检查车位号");
}
// 创建一个 ObjectModel 对象
ObjectModel obj = ObjectHelper.GetObjectModel(parkingSpace_clsName);
// 设置属性值
SetAttrValue(obj, formData);
obj.SetAttrValue("BH", no);
SetSFFLValue(obj);
// 添加到数据库中
_baseBLL.Add(obj);
// 创建关联关系
RelationModel rel = ObjectHelper.GetRelationModel(houseClassifyToCarport_clsName);
NewRel(rel, houseClassifyId, obj.ObjectID);
}
// 提交事务
_baseBLL.CommitTransaction();
return "";
}
catch (Exception ex)
{
// 回滚事务并抛出异常
_baseBLL.RollbackTransaction();
throw ex;
}
}
```
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