Server Error in '/' Application.

The value '' of the MaximumValue property of 'txtQtyRangeValid' cannot be converted to type 'Integer'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: The value '' of the MaximumValue property of 'txtQtyRangeValid' cannot be converted to type 'Integer'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[HttpException (0x80004005): The value '' of the MaximumValue property of 'txtQtyRangeValid' cannot be converted to type 'Integer'.]
   System.Web.UI.WebControls.RangeValidator.ValidateValues() +2237708
   System.Web.UI.WebControls.RangeValidator.ControlPropertiesValid() +14
   System.Web.UI.WebControls.BaseValidator.OnPreRender(EventArgs e) +38
   System.Web.UI.Control.PreRenderRecursiveInternal() +90
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +906


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4075.0