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/// Ãû³Æ£ºIsNumberic
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public bool IsNumberic(string oText)
{
try
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int var1=Convert.ToInt32 (oText);
return true;
}
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{
return false;
}
}
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     try
     {
       Convert.ToInt32("123"):
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     }
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    public bool IsNumberic(string oText)
    {
        try
        {
            Decimal Number = Convert.ToDecimal (oText);
            return true;
        }
        catch
        {
            return false;
        }
    }
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/// </summary>  
/// <param name="str">×Ö·û´®</param>  
/// <returns>bool</returns>  
public bool IsNumeric(string str)  
{  
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