博客展示了ASP.NET代码，定义了两个日期变量a和b，a获取当前时间，b从chkExport.Text转换而来。计算两者时间差，将差值的总天数转换为整数类型。体现了ASP.NET中日期处理和整数转换的操作。
Dim a As Date
Dim b As Date
a = System.DateTime.Now
b = CDate(chkExport.Text)
Dim ts As System.TimeSpan
ts = a.Subtract(b)
Dim pp As Integer
pp = CInt(ts.TotalDays)
Dim b As Date
a = System.DateTime.Now
b = CDate(chkExport.Text)
Dim ts As System.TimeSpan
ts = a.Subtract(b)
Dim pp As Integer
pp = CInt(ts.TotalDays)
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