System.InvalidCastException:“unable to cast com object of type 'system.__comobject'”通常表示尝试将COM对象转换为不兼容的类型时发生了错误。 在C#中,System.InvalidCastException是一个异常类,用于表示在类型转换过程中发生的错误。当尝试将一个对象转换为不兼容的类型时,就会抛出这个异常。对于COM对象(Component ...
"The left-hand side of an assignment must be a variable, property or indexer". Help? "The remote server returned an error: (401) Unauthorized" "Typewriter" like effect in a C# Console application? "Unable to cast object of type 'System.Configuration.DefaultSection' to type blah blah ((...
报错信息:Unable to cast object of type 'System.Int32' to type 'System.String' 解决方案:其实就是在定义Model的时候的字段数据类型与数据库定义的数据类型不匹配,改成跟数据库的一样即可!
今天在使用EntityFrameworkCore 查询的时候在调试的时候总是提示如下错误:Unable to cast object of type 'System.Data.SqlTypes.SqlString' to type 'System.Data.SqlTypes.SqlGuid'第一次看这个报错肯定是数据库实体和EFCore中定义的某种类型不匹配从而导致类型转换错误,但是业务涉及到这么多的实体Entity,那么到底是哪...
Unable to cast COM object of type 'Microsoft.Office.Interop.PowerPoint.ApplicationClass' to interface type 'Microsoft.Office.Interop.PowerPoint._Application Unable To Change Platform From Any CPU to X86 Unable to connect to any of the specified MySQL hosts Unable to copy file "obj\Debug\MyProject...
Exception object: 0ded29fc Exception type: System.InvalidCastException Message: Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.VisualStudio.OLE.Interop.IServiceProvider'. This operation failed because the ...
GlobalExceptionFilter:{\"ClassName\":\"System.InvalidCastException\",\"Message\":\"Unable to cast object of type 'SqlSugar.MySqlQueryable`1[<>f__AnonymousType372`2[System.String,System.String]]' to type 'SqlSugar.ISugarQueryable`1[<>f__AnonymousType372`2[System.String,System.String]] ...
Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application'. This operation failed because the QueryInterface call on the COM component for...
How to solve “Unable to cast COM object of type Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application'”项目 2012/04/20 Recently I was working on a proble...
.WhereIf(!string.IsNullOrEmpty(search), x =>x.Name.Contains(search));varapiScopes =awaitfilteredApiScopes .PageBy(x=>x.Name, page, pageSize).ToListAsync(); pagedList.Rows.AddRange(apiScopes); pagedList.TotalCount=awaitfilteredApiScopes.CountAsync(); ...