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using System;
using System.Text;
namespace ConcreteMIS.Common.Chinese
{
/// <summary>
/// ºº×ÖÆ´ÒôÉùĸ¼ÆËãÀà
/// Write by WangZhenlong at 2003/11/29
/// </summary>
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DateTime dt = DateTime.Now;
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DateTime dt_First = dt.AddDays(-(dt.Day) + 1);
Label1.Text = dt_First.ToString("yyyy-MM-dd");
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DateTime dt2 = dt.AddMonths(1);
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DateTime dt_Last = dt2.AddDays( ......