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/// <summary>
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public static string CheckSaftParam(string param)
{

param = param.Replace("net user", "");
param = param.Replace("xp_cmdshell", "");
param = param.Replace("/add", "");
param = param.Replace("exec%20master.dbo.xp_cmdshell", "");
param = param.Replace("net localgroup administrators", "");
param = param.Replace("select", "");
param = param.Replace("'", "''");
param = param.Replace("insert", "");
param = param.Replace("delete", "");
param = param.Replace("drop", "");
param = param.Replace("truncate", "");


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