[Debug] Entity Framework parameter exceed max length

Our team member report an error is that a user execute with large text from clipboard then occurred "String or binary data would be truncated"


Root cause

 The reason is the length of the input value is 8000.I am curious about when executed "ToList" may not error but executed "Count" will occur error. Therefore, I traced the sql over SQL Profiler then figure out as below.
  • ToList() declared varchar(8000) -->exceed max length would be truncated by automatic
  • Count() declared  varchar(max) -->exceed max length throws an exception.

Popular posts from this blog

VS2017-Build fail-FindDependenciesOfExternallyResolvedReferences

Image
Recently, After installed the newest version of Visual Studio 2017 that occurred some of the following error messages: Software Infomation:Visual Studio 2017 Enterprise 15.7.4  (The problem since 15.6.x) Workaround I asked the help from forums the got temporary workaround as below: Opening file: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets Finding the red block highlight at below photo then remove it from the file. Reference https://developercommunity.visualstudio.com/content/problem/208668/the-finddependenciesofexternallyresolvedreferences.html
Keep reading

IIS Block IP Setting

Image
We have two Web Server one for internal another for external. Now we consider let two into one. The main site will be opened a limited specific IP range, but some of the other sites will be opened to the public. How to 1.Add Features- IP and Domain Restriction After installed, It will show the icon in the root or subsites. 2.Setting IIS Root access from Allow to Deny. 3.IIS Root against specific IP range to open.e.g.The mask of the example as 255.255.255.0 it means from192.168.2.0~255 can be accessed. 4.Opening to the public by specific sites. Due to IIS Root has setting the deny. All of the sites will inherit this setting. After subsite modify its settings then it will base on a subsite. Therefore, it can be satisfied our request the deny is default but some allow. All of the settings are stored in the IIS config file. %windir%\System32\inetsrv\config\applicationHost.config Above-mentioned, ...
Keep reading

VS2017.15.8.4 Error fixed

Image
Recently, I am a bit of fear to upgrade VS2017. Especially a major version was changed that every time will occur some error after installed. This time I  upgrade it from 15.7.x to 15.8.4.As expected all of my projects cannot be loaded. Workaground According to the message I head to the developer forum where I found the answer as below: 1. Run as administrator to open Developer Command. 2.Enter the following commands. gacutil /i "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Build.Framework.dll" gacutil /i "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Build.dll" gacutil /i "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Build.Engine.dll" gacutil /i "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Build.Conversion.Core.dll" gacutil /i "C:\Pro...
Keep reading