diff --git a/HJGL_DS/FineUIPro.Web/HJGL/DataIn/DrawingRecognitionContent.aspx.cs b/HJGL_DS/FineUIPro.Web/HJGL/DataIn/DrawingRecognitionContent.aspx.cs
index 0e44d45..b628a14 100644
--- a/HJGL_DS/FineUIPro.Web/HJGL/DataIn/DrawingRecognitionContent.aspx.cs
+++ b/HJGL_DS/FineUIPro.Web/HJGL/DataIn/DrawingRecognitionContent.aspx.cs
@@ -399,8 +399,11 @@ namespace FineUIPro.Web.HJGL.DataIn
                     row["remark"] = item.Value<string>("remark");
                     if (string.IsNullOrEmpty(row["drawing_number"].ToString()))
                     {
-                        var rowOther = dtOther.Select("page= " + row["page_no"].ToString()).FirstOrDefault();
-                        row["drawing_number"] = rowOther["text"];
+                        var rowOther = dtOther.Select("page= '" + row["page_no"].ToString()+ "'").FirstOrDefault();
+                        if (rowOther != null)
+                        {
+                            row["drawing_number"] = rowOther["text"];
+                        }
                     }
                     dt.Rows.Add(row);
                 }