无法将“iShopClient.iShop.ProductOption”类型的对象强制转换为“System.Data.DataRowView”。 [英] Unable to cast object of type 'iShopClient.iShop.ProductOption' to type 'System.Data.DataRowView'.

问题描述

基本上我有以下错误：



无法将'iShopClient.iShop.ProductOption'类型的对象强制转换为'System.Data.DataRowView'。



我不知道怎么解决这个问题。



我基本上我想要的信息在要传递到其他页面的当前行上。但我甚至无法获得DataRowView的值。帮助将不胜感激

 private void orderButton_Click（object sender，RoutedEventArgs e）
 {
 if（productOptionsDataGrid.SelectedItem） ！= null）
 {
 int productOptionID = Convert.ToInt32（（（DataRowView）productOptionsDataGrid.SelectedValue）[OptionID]）; 
 Convert.ToInt32（（（DataRowView）productOptionsDataGrid.SelectedValue）[OptionID]）; 
 //productsDataGrid.SelectedItem 
 // DataRowView drv =（DataRowView）productOptionsDataGrid.SelectedItem; 
 DataRowView drv2 =（DataRowView）productsDataGrid.SelectedItem; 
 
 int productID = Convert.ToInt32（drv2 [ProductID]）; 
} 
 else if（productOptionsDataGrid.SelectedItem == null）
 {
 DataRowView drv2 =（DataRowView）productsDataGrid.SelectedItem; 
 int productID = Convert.ToInt32（drv2 [ProductID]）; 
 GlobalVariables.productID = productID; 
} 
} 
 

解决方案

尝试如下

< pre lang =c＃> ProductOption po =（ProductOption）productsDataGrid.SelectedItem;
// po.ProductID

似乎你绑定 iShopClient.iShop.ProductOption 对象为 productsDataGrid 数据源。如果绑定数据表，你可以选择项目 DataRowView 。

Basically I have the following error:

"Unable to cast object of type 'iShopClient.iShop.ProductOption' to type 'System.Data.DataRowView'."

I'm not sure how to get around this.

I basically i want the information on a current row to be passed to a different page. But I cant even get the values of a DataRowView. Help would be appreciated

private void orderButton_Click(object sender, RoutedEventArgs e)
{
    if (productOptionsDataGrid.SelectedItem != null)
    {
        int productOptionID = Convert.ToInt32(((DataRowView)productOptionsDataGrid.SelectedValue)["OptionID"]);
        Convert.ToInt32(((DataRowView)productOptionsDataGrid.SelectedValue)["OptionID"]);
        //productsDataGrid.SelectedItem
        //DataRowView drv = (DataRowView)productOptionsDataGrid.SelectedItem;
        DataRowView drv2 = (DataRowView)productsDataGrid.SelectedItem;

        int productID = Convert.ToInt32(drv2["ProductID"]);
    }
    else if (productOptionsDataGrid.SelectedItem == null)
    {
        DataRowView drv2 = (DataRowView)productsDataGrid.SelectedItem;
        int productID = Convert.ToInt32(drv2["ProductID"]);
        GlobalVariables.productID = productID;
    }
}

解决方案

try like below

ProductOption po= (ProductOption)productsDataGrid.SelectedItem;
//po.ProductID

it seems you binding iShopClient.iShop.ProductOption objects as productsDataGrid Data Source. you can cas't selected item to DataRowView in case of binding with datatable.

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