namespace APIJSON.NET

{

using System;

using System.Text.RegularExpressions;

public static class StringExtensions

{

/// <summary>

/// 是否合法表名（大写字母数字下划线 长度在1-15之间）

/// </summary>

/// <param name="str"></param>

/// <returns></returns>

public static bool IsTable(this string str)

{

return Regex.IsMatch(str, @"^[a-zA-Z][a-zA-Z0-9_]{1,15}$");

}

/// <summary>

///

/// </summary>

/// <param name="str"></param>

/// <returns></returns>

public static bool IsField(this string str)

{

return Regex.IsMatch(str, @"^[a-zA-Z][a-zA-Z0-9_()]{1,15}$");

}

/// <summary>

/// 是否有值

/// </summary>

/// <param name="str"></param>

/// <returns></returns>

public static bool IsValue(this object str)

{

return str != null && !string.IsNullOrEmpty(str.ToString());

}

public static string GetParamName(this string param)

{

return param + new Random().Next(1, 100);

}

}

}