表名为空报错提示修复

Tools/UI/wAutoClass.cs

@@ -118,6 +118,7 @@ namespace Tools.UI
         /// </summary>
         private void GenerateEntity()
         {
+            if (lsbTableInfo.SelectedItem==null) return;
             string strTableName = lsbTableInfo.SelectedItem.ToString();
 
             StringBuilder sb = new StringBuilder();