关于C#调用com接口，给对象的域赋值
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悬赏园豆：20
[待解决问题]
背景为做一个导入bug到qc系统中的小工具
VB样例为
Sub ConnectToQC(ByVal qcserver_txt, ByVal qcport_txt, ByVal qcusername_txt, ByVal qcpwd_txt, ByVal qcdomain_txt, ByValqcproj_txt) Dim tdc1 As TDAPIOLELib.TDConnection tdc1 = New TDAPIOLELib.TDConnection tdc1.InitConnectionEx( "http://" & qcserver_txt & ":" & qcport_txt & "/qcbin") tdc1.Login(qcusername_txt, qcpwd_txt) tdc1.Connect(qcdomain_txt, qcproj_txt) DimBugF DimBugBg BugF = tdc1.BugFactory() BugBg = BugF.AddItem(System. DBNull.Value) BugBg.Summary = "My Test Bug From VB App" BugBg.Field( "BG_DETECTION_DATE") = Today BugBg.Field( "BG_SEVERITY") = "2-Medium" BugBg.Post() If tdc1.Connected Then MsgBox( "You are connected to QC and created a Bug") EndIf
改为C#版本
TDConnection tdccon = new TDConnection(); tdccon.InitConnectionEx(@"http://172.20.90.115:8899/qcbin"); tdccon.Login("wenbinbin", "123456"); tdccon.Connect("HTGL", "合同管理V5"); dynamic BugF = tdccon.BugFactory; dynamic BugBg = BugF.AddItem(System.DBNull.Value); BugBg.Summary = "My Test Bug From C# App"; BugBg.Priority = "1-低"; WriteInMemory.WriteInMemory(ref BugBg, "BG_DETECTION_DATE", DateTime.Now.ToString()); WriteInMemory.WriteInMemory(ref BugBg, "BG_SUBJECT", "18.纠纷管理"); WriteInMemory.WriteInMemory(ref BugBg, "BG_RESPONSIBLE", "wenbinbin"); WriteInMemory.WriteInMemory(ref BugBg, "BG_DETECTED_BY", "wenbinbin"); WriteInMemory.WriteInMemory(ref BugBg, "BG_DESCRIPTION", "神马描述也木有"); BugBg.Post(); if (tdccon.Connected) { MessageBox.Show("成功,Year!"); }
其中创建bug对象使用下面代码报错
BugBg.Summary = "New defect"; BugBg.Status = "New"; BugBg.DetectedBy = "admin"; //WriteInMemory(ref BugBg, "BG_DETECTION_DATE", "2008-11-21"); BugBg.field("BG_DETECTION_DATE").VALUE = "2008-11-21"; BugBg.field("BG_DETECTION_VERSION").VALUE = "系统版本"; BugBg.field("BG_PRIORITY").VALUE = "服务级别"; BugBg.Priority = "服务级别"; BugBg.field("BG_PROJECT").VALUE = "上线阶段"; BugBg.Project = "上线阶段"; BugBg.field("BG_REPRODUCIBLE").VALUE = "N"; BugBg.Reproducible = "N"; BugBg.field("BG_RESPONSIBLE").VALUE = "admin";
具体错误信息为Cannot perform runtime binding on a null reference
无法直接用field赋值。必需使用
WriteInMemory.WriteInMemory(ref BugBg, "BG_DETECTION_DATE", DateTime.Now.ToString()); WriteInMemory.WriteInMemory(ref BugBg, "BG_SUBJECT", "18.纠纷管理"); WriteInMemory.WriteInMemory(ref BugBg, "BG_RESPONSIBLE", "wenbinbin"); WriteInMemory.WriteInMemory(ref BugBg, "BG_DETECTED_BY", "wenbinbin"); WriteInMemory.WriteInMemory(ref BugBg, "BG_DESCRIPTION", "神马描述也木有");
才不会报错。
WriteInMemory.WriteInMemory的具体VB实现
Public Class WriteInMemory Public Shared Sub WriteInMemory(ByRef obj As Object, ByVal field As String, ByVal value As String) Dim BugBg BugBg = obj BugBg.Field(field) = value End Sub End Class
求大神解答下为毛用后面这个就不报错了
所有回答(1)
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可以写成类似：BugBg["BG_PRIORITY"] = "4-高";