我为Microsoft Office Word构建了一个加载项.当Word以管理员身份运行时使用加载项没有问题,但是当它不以管理员身份运行时,访问功能区元素有两个常见的例外.
第一个例外:
Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Core.IRibbonUI'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000C03A7-0000-0000-C000-000000000046}' failed due to the following error: could not be found. (Exception from HRESULT: 0x80030002 (STG_E_FILENOTFOUND)).
at Microsoft.Office.Core.IRibbonUI.InvalidateControl(String ControlID)
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通过以下代码使控件无效时,会发生此错误:
ribbon.InvalidateControl("control-id");
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第二个例外:
Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' to interface type 'Microsoft.Office.Interop.Word._Application'. This operation failed because the QueryInterface call on the COM component for the interface …Run Code Online (Sandbox Code Playgroud) 我最近一直在处理一些性能问题,并试图找出如何以指数方式提高某些Oracle数据库调用的性能.
技术:
我熟悉DataTableDapper和SQL Server 的使用和表值参数,并希望使用上述技术复制它.我还没有能够重现下面的解决方案来使用Devart和OracleManaged:
下面的代码不是我正在运行的......这是一个释义的例子.我只需要与Oracle一起工作的东西来传递DataTable或在查询/插入中使用的对象数组.
SQL Server:
CREATE TYPE MyCustomerInfo AS TABLE
(
Id BIGINT NOT NULL,
--Name NVARCHAR(32) NOT NULL,
--...
);
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C#for SQL Server:
const string getCustomersSql = @"
SELECT
c.Id,
--c.Name
--...
FROM @myCustomers mc
LEFT JOIN Customers c
ON c.Id = mc.Id";
var myCustomers = new DataTable();
myCustomers.Columns.Add("Id", typeof(long));
//...
myCustomers.Rows.Add(1);
myCustomers.Rows.Add(2);
var customers = await sqlDbConnection.QueryAsync<Customer>(getCustomersSql, new { myCustomers = myCustomers.AsTableValuedParameter("MyCustomerInfo") }); …Run Code Online (Sandbox Code Playgroud)