类型＆＃39; QuickGraph.AdjacencyGraph <tvertex，tedge =“”>＆＃39;存在于“* .dll”和“* .dll中

Question

我正在使用C＃进行Windows窗体应用程序，我收到以下错误。我该如何解决？

  

类型＆＃39; QuickGraph.AdjacencyGraph＆＃39;存在于＆c; \ Users \ amir \ Documents \ Visual Studio 2010 \ Projects \ Elearning推荐者\ packages \ QuickGraph.3.3.51106.0 \ lib \ net35 \ CodeContracts \ QuickGraph.Contracts.dll＆＃39;和＆＃c; \ Users \ amir \ Documents \ Visual Studio 2010 \ Projects \ Elearning推荐者\ packages \ QuickGraph.3.3.51106.0 \ lib \ net35 \ QuickGraph.dll＆＃39;