DevExpress DateEdit组件是空日期，传入SQL参数报错解决方法

C# Code:


/// <summary>
/// 转换为SQL支持的日期格式, 日期范围：1753-1-1 ~ 9999-12-31
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static DateTime ToSqlDateTime(object o)
{
   DateTime defMinValue = DateTime.Parse("1753-01-01 00:00:00");
   DateTime defMaxValue = DateTime.Parse("9999-12-31 23:59:59");
   if (null == o) return defMinValue;//传入空值，返回预设值
   
   DateTime dt;
   if (DateTime.TryParse(o.ToString(), out dt))
   {
      if (dt < defMinValue || dt > defMaxValue)
      return defMinValue;//无效日期，预设返回SQL支持的最小日期
      else
      return dt;
   }
   return defMinValue;
}


//来源:C/S框架网(www.csframework.com) QQ:1980854898

C# Code:


public DataSet GetReportDemo(string docNoFrom, string docNoTo, DateTime docDateFrom, DateTime docDateTo)
{
   SqlProcedure sp = SqlBuilder.BuildSqlProcedure("usp_IN_GetReport");
   sp.AddParam("@DocNoFrom", SqlDbType.VarChar, docNoFrom);
   sp.AddParam("@DocNoTo", SqlDbType.VarChar, docNoTo);
   sp.AddParam("@DocDateFrom", SqlDbType.DateTime,ConvertEx.ToSqlDateTime(docDateFrom));
   sp.AddParam("@DocDateTo", SqlDbType.DateTime, ConvertEx.ToSqlDateTime(docDateTo));
   return DataProvider.Instance.GetDataSet(_DBName, sp.SqlCommand);
}


//来源:C/S框架网(www.csframework.com) QQ:1980854898