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废话不多说了,直接给大家贴代码了,具体代码如下所述:
/// <summary>
/// 类型转换类
/// 处理数据库获取字段为空的情况
/// </summary>
public static class DBConvert
{
#region------------------ToInt32类型转换------------------
/// <summary>
/// 读取数据库中字符串并转换成Int32
/// 为空时返回0
/// </summary>
/// <param name="obj">object类型的值</param>
/// <returns>Int32类型</returns>
public static int ToInt32(object obj)
{
int result = 0;
if (IsInt(Convert.ToString(obj)))
{
result = Convert.ToInt32(obj);
}
else if (obj != null && obj is Enum) //处理非null值类型时(或者枚举)
{
result = ((IConvertible)obj).ToInt32(null);
}
return result;
}
/// <summary>
/// 读取数据库中字符串并转换成Int32
/// 为空时返回0
/// </summary>
/// <param name="str">string类型的值</param>
/// <returns>Int32类型</returns>
public static int ToInt32(string str)
{
int result = 0;
if (IsInt(str))
{
result = Convert.ToInt32(str);
}
return result;
}
/// <summary>
/// 判断一个字符串是否属于Int类型
/// 如果是的返回true,如果不是返回false
/// </summary>
/// <param name="str">string类型的值</param>
/// <returns>true:是Int的字符串(即可以转换成Int类型),false:不是Int类型的字符串</returns>
public static bool IsInt(string str)
{
bool result = false;
if (str != "" && str!=null)
{
Regex reg = new Regex("^[0-9]*$");
if (reg.IsMatch(str))
{
result = true;
}
}
return result;
}
#endregion
#region------------------ToString类型转换------------------
/// <summary>
/// 读取数据库中字符串并转换成string
/// </summary>
/// <param name="obj">object类型的值</param>
/// <returns>string类型</returns>
public static string ToString(object obj)
{
string result = "";
if (obj != null)
{
result = Convert.ToString(obj);
}
return result;
}
#endregion
#region------------------ToDouble类型转换------------------
/// <summary>
/// 判断一个字符串是否属于Double类型(包括负浮点型)
/// 如果是的返回true,如果不是返回false
/// </summary>
/// <param name="str">string类型的值</param>
/// <returns>true:是Double的字符串(即可以转换成Double类型),false:不是Double类型的字符串</returns>
public static bool IsDouble(string str)
{
bool result = false;
if (str != "" && str != null)
{
Regex reg = new Regex(@"^(-?\d+)(\.\d+)?$");
if (reg.IsMatch(str))
{
result = true;
}
}
return result;
}
/// <summary>
/// 读取数据库中字符串并转换成Int32
/// 为空时返回0
/// </summary>
/// <param name="obj">object类型的值</param>
/// <returns>Int32类型</returns>
public static double ToDouble(object obj)
{
double result = 0.0;
if (IsDouble(Convert.ToString(obj)))
{
result = Convert.ToDouble(obj);
}
else if (obj != null && obj is Enum) //处理枚举
{
result = ((IConvertible)obj).ToDouble(null);
}
return result;
}
/// <summary>
/// 读取数据库中字符串并转换成Int32
/// 为空时返回0
/// </summary>
/// <param name="str">string类型的值</param>
/// <returns>Int32类型</returns>
public static double ToDouble(string str)
{
double result = 0.0;
if (IsDouble(str))
{
result = Convert.ToDouble(str);
}
return result;
}
#endregion
#region------------------ToDateTime类型转换------------------
/// <summary>
/// 判断时间格式是否是时间类型
/// 如23:10
/// </summary>
/// <param name="str">要判断的字符串</param>
/// <returns>true:是时间类型的字符串(即可以转换成时间类型),false:不是时间类型的字符串</returns>
public static bool isDateTime(string str)
{
bool result = false;
if (str != "" && str != null)
{
Regex reg = new Regex("(([01]\\d)|(2[0-3])):[0-5]\\d");
if (reg.IsMatch(str))
{
result = true;
}
}
return result;
}
#endregion
}
}
//"^\d+(\.\d+)?$" //非负浮点数(正浮点数 + 0)
//"^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$" //正浮点数
//"^((-\d+(\.\d+)?)|(0+(\.0+)?))$" //非正浮点数(负浮点数 + 0)
//"^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$" //负浮点数
//"^(-?\d+)(\.\d+)?$" //浮点数
</div>
好了,Asp.Net类型转换类(通用类)代码分享到此结束。
下面看下ASP.NET页面数据验证通用类的实例代码。
public class PageValidate
{
private static Regex RegPhone = new Regex("^[0-9]+[-]?[0-9]+[-]?[0-9]$");
private static Regex RegNumber = new Regex("^[0-9]+$");
private static Regex RegNumberSign = new Regex("^[+-]?[0-9]+$");
private static Regex RegDecimal = new Regex("^[0-9]+[.]?[0-9]+$");
private static Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?\d+[.]?\d+$
private static Regex RegEmail = new Regex("^[\\w-]+@[\\w-]+\\.(com|net|org|edu|mil|tv|biz|info)$");//w 英文字母或数字的字符串,和 [a-zA-Z0-9] 语法一样
private static Regex RegCHZN = new Regex("[\u4e00-\u9fa5]");
public PageValidate()
{
}
//数字字符串检查#region 数字字符串检查
public static bool IsPhone(string inputData)
{
Match m = RegPhone.Match(inputData);
return m.Success;
}
/**//// <summary>
/// 检查Request查询字符串的键值,是否是数字,最大长度限制
/// </summary>
/// <param name="req">Request</param>
/// <param name="inputKey">Request的键值</param>
/// <param name="maxLen">最大长度</param>
/// <returns>返回Request查询字符串</returns>
public static string FetchInputDigit(HttpRequest req, string inputKey, int maxLen)
{
string retVal = string.Empty;
if(inputKey != null && inputKey != string.Empty)
{
retVal = req.QueryString[inputKey];
if(null == retVal)
retVal = req.Form[inputKey];
if(null != retVal)
{
retVal = SqlText(retVal, maxLen);
if(!IsNumber(retVal))
retVal = string.Empty;
}
}
if(retVal == null)
retVal = string.Empty;
return retVal;
}
/**//// <summary>
/// 是否数字字符串
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsNumber(string inputData)
{
Match m = RegNumber.Match(inputData);
return m.Success;
}
/**//// <summary>
/// 是否数字字符串 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsNumberSign(string inputData)
{
Match m = RegNumberSign.Match(inputData);
return m.Success;
}
/**//// <summary>
/// 是否是浮点数
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsDecimal(string inputData)
{
Match m = RegDecimal.Match(inputData);
return m.Success;
}
/**//// <summary>
/// 是否是浮点数 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsDecimalSign(string inputData)
{
Match m = RegDecimalSign.Match(inputData);
return m.Success;
}
#endregion
//中文检测#region 中文检测
/**//// <summary>
/// 检测是否有中文字符
/// </summary>
/// <param name="inputData"></param>
/// <returns></returns>
public static bool IsHasCHZN(string inputData)
{
Match m = RegCHZN.Match(inputData);
return m.Success;
}
#endregion

