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c# winform 开启双缓冲，解决dataguidview卡顿

窗体的构造函数中，开启窗体的双缓冲publicssss(){//设置窗体的双缓冲this.SetStyle(ControlStyles.OptimizedDoubleBuffer|ControlStyles.ResizeRedraw|ControlStyles.AllPaintingInWmPaint,true);th...

开发笔记·2024-02-02

解决npm安装包时报出：shasum check failed for错误（npm注册国内镜像介绍）

镜像使用方法（三种办法任意一种都能解决问题，建议使用第三种，将配置写死，下次用的时候配置还在）:1.通过config命令1npmconfigsetregistry http://registry.cnpmjs.org2npminfounderscore（如果上面配置正确这个命令会有字符串response）2....

开发笔记·2023-12-02

ORA-48161: invalid input for ADR instance id

文档解释ORA-48161:invalidinputforADRinstanceidCause:AninvalidinputwaspassedinfortheADRinstanceid.TheADRinstanceidiseitherNULLortoolongofastring.Action:ChecktheADRin...

IT技术学习·2023-07-28

ORA-54531: invalid orientation for element at element offset

文档解释ORA-54531:invalidorientationforelementatelementoffsetCause:Theorientationofthecurrentgeometrywasnotvalid.Action:Reversetheorientationofthegeometry.ORA-54531...

IT技术学习·2023-07-28

ORA-38471: ROWIDs for table aliases cannot be null

文档解释ORA-38471:ROWIDsfortablealiasescannotbenullCause:Anattemptwasmadetopassanullvalueforthetablealiasattributeinthedataitem,whichisnotpermitted.Action:Passavali...

IT技术学习·2023-07-28

ORA-60025: Event for temp segment cleanup used for temp lobs

文档解释ORA-60025:EventfortempsegmentcleanupusedfortemplobsCause:TempLOBsegmentsusedfortemporaryLOBsaredeletedonlyonsessionexitwhichmayleadtolargeamountsofmemorybei...

IT技术学习·2023-07-28

ORA-47402: incorrect evaluation options value for Factor string

文档解释ORA-47402:incorrectevaluationoptionsvalueforFactorstringCause:ThefactorevaluationsoptionsvalueisincorrectAction:Pleasereviewthefactordefinitionandcorrectita...

IT技术学习·2023-07-28

ORA-29826: keyword FOR is missing

文档解释ORA-29826:keywordFORismissingCause:FORkeywordmustbeprovidedwithCreateIndextypestatement.Action:UseFORkeywordandproviderelevantoperatorinformation....

IT技术学习·2023-07-28

ORA-30968: invalid XPATH or NAMESPACE option for XML Index

文档解释ORA-30968:invalidXPATHorNAMESPACEoptionforXMLIndexCause:Anattemptwasmadetouseanunsupportedoption.Action:Usetheappropriateoption.ORA-30968异常消息表明，您尝试创建的XML索引的...

IT技术学习·2023-07-28

ORA-38716: Must supply an integer for the TYPE option.

文档解释ORA-38716:MustsupplyanintegerfortheTYPEoption.Cause:AninvalidvaluewasspecifiedforTYPEintheDUMPFLASHBACKcommand.Action:Specifyanintegervalue.ORA-38716是由Oracl...

IT技术学习·2023-07-28

ORA-30357: this PL/SQL function cannot be supported for query rewrite

文档解释ORA-30357:thisPL/SQLfunctioncannotbesupportedforqueryrewriteCause:ThestatementreferencedaPL/SQLfunctionthatisnotmarkedDETERMINISTIC.Action:Performoneofthefo...

IT技术学习·2023-07-28

ORA-55339: a virtual model already exists for the specified model-rulebase combination

文档解释ORA-55339:avirtualmodelalreadyexistsforthespecifiedmodel-rulebasecombinationCause:Avirtualmodelwithidenticalcomponentswasalreadypresent.Action:Chooseadiffer...

IT技术学习·2023-07-28

ORA-39801: Subtype “string”.”string” is not a valid subtype for column string.

文档解释ORA-39801:Subtype“string”.”string”isnotavalidsubtypeforcolumnstring.Cause:Subtypespecifiedwasnotthedeclaredtypenorwasitderivedfromth...

IT技术学习·2023-07-28

ORA-32150: Cannot perform operation on a null timestamp

文档解释ORA-32150:CannotperformoperationonanulltimestampCause:Thetimestampinvolvedinthisoperationisnull.Action:Usevalid,non-nulltimestampinstancetoperformthisoperat...

IT技术学习·2023-07-28

ORA-30974: invalid Path Id Index option for XML Index

文档解释ORA-30974:invalidPathIdIndexoptionforXMLIndexCause:Anattemptwasmadetouseanunsupportedoption.Action:Usetheappropriateoption.ORA-30974：对于XML索引无效的PathIdIndex选项...

IT技术学习·2023-07-28