刷新数据网格 [英] Refreshing data grid

问题描述

Am使用 TableMapping 将数据加载到数据网格.如下

Am using TableMapping to load data to a data grid. as below

daCompanies.TableMappings.Add("tbl_permits", "companies")

我有一个刷新按钮，它仅调用与最初将数据加载到数据网格上相同的功能.刷新在上面的代码处停止，并出现错误:

I have a refresh button that just calls the same function used to initially load the data on the data grid. The refresh stops at the code above with an error:

The DataTableMapping.SourceTable is required to be unique, ''tbl_permits'' already exists in the collection.

如何清除 DataTableMapping.SourceTable 上的更改或将更改保存到数据库并在重新加载数据之前将其清除?

谢谢

How do i clear OR save changes on the DataTableMapping.SourceTable to database and clear it before reloading it with data?

Thanks

推荐答案

再次阅读错误消息.当您一次只能映射一个表时，您试图添加同一表的两个映射.要么删除映射表的行，要么在尝试添加映射之前检查该映射是否已经存在.

Read the error message again. You''re trying to add two mappings of the same table, when you can only map a table once. Either remove the line that''s mapping the table, or check to see if the mapping already exists before you try to add it.

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