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Unable to cast object of type 'System.Data.DataRowView' to type 'System.Data.DataRow'

开发者 https://www.devze.com 2022-12-22 23:55 出处:网络
I h开发者_如何学Pythonave following exception in the foreach loop Unable to cast object of type \'System.Data.DataRowView\' to type

I h开发者_如何学Pythonave following exception in the foreach loop

Unable to cast object of type 'System.Data.DataRowView' to type 'System.Data.DataRow'

How to solve the issue?


A DataRowView is not a DataRow, and isn't convertible to a DataRow. However, you can access the corresponding DataRow using the Row property :

foreach(DataRowView drv in dataView)
{
    DataRow row = drv.Row;
    ...
}


You can cast like:

datarow= DirectCast (System.Data.DataRowView, System.Data.DataRow).row 


It looks like you used DataRow as the foreach loop variable type while actually you are iterating enumerable with DataRowView type. Check if DataRowView has functionality that you need, if so you can just replace one with another. Or you can modify your code to return enumerable with DataRow instead of one with DataRowView.


Instead of foreach(DataRow dr in myDataView), try
foreach(DataRowView drv in myDataView).


I believe that you try to do something like this

DataRowView row = (DataRowView)e.Item.DataItem;

This Is How It Should Be Done

System.Data.Common.DbDataRecord objData = (System.Data.Common.DbDataRecord)e.Item.DataItem;

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