<p>Yeni fiş kaydı yapıldığında veritabanında ki en büyük numaranın 1 artırılması için yazdığım kod .&nbsp;</p> <p>&nbsp;</p> <blockquote> <p>&nbsp;public JsonResult sonfisno()<br /> &nbsp; &nbsp; &nbsp; &nbsp; {<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string[] dizi = new string[1];<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var fisno = db.S_FIS.Max(a =&gt; a.fisno).ToString();</p> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (fisno != null &amp;&amp; fisno != &quot;&quot;)<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string ilkfisno = fisno;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int fisnnoint = int.Parse(fisno);<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; fisnnoint++;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int length = Convert.ToString(fisnnoint).Length;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string sonfisno = ilkfisno.Substring(0, 5 - length);</p> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string SonFisNumarası = sonfisno + fisnnoint.ToString();</p> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dizi[0] = SonFisNumarası;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return Json(dizi, JsonRequestBehavior.AllowGet);<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dizi[0] = &quot;00001&quot;;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return Json(dizi, JsonRequestBehavior.AllowGet);<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</p> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br /> &nbsp; &nbsp; &nbsp; &nbsp; }</p> </blockquote> <p>Html tarafı&nbsp;</p> <blockquote> <p>&nbsp; function sonfisbul(param1)<br /> &nbsp; &nbsp; &nbsp; &nbsp; {<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;$.ajax({<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;type: &quot;POST&quot;,<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;url: &quot;/hareket/sonfisno&quot;,<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;contentType: &quot;application/json; charset=utf-8&quot;,<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;dataType: &quot;json&quot;,<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;success: function (data) {<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;$(param1).val(data);<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}</p> </blockquote> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;});<br /> &nbsp; &nbsp; &nbsp; &nbsp; };</p> <p>&nbsp;</p>