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if (((string)((ComboBoxItem)cmbField.SelectedItem).Value).Equals("System.DateTime"))
{
                    //ÅжÏÈÕÆÚµÄ;
                
                    if (checkBox1.Checked == true)
                    {
                        value = "#" + cmbValue.SelectedItem.ToString().Trim() + "#";
                    }
}


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ASP.NET C# URL¼ÓÃܽâÃÜ

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using System.Security.Cryptography;
using System.IO;
using System.text;
 
        /// <summary>
        /// ¼ÓÃÜ
        // ......

vb.net²Ù×÷Êý¾Ý¿âÖ®ACCESS£¨2£©

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SELECT SUM(R) AS ½á¹û
from
(
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  SELECT -ºÏ¼Æ AS R from T1 WHERE (ID = 2) UNION
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