C# foreach 条件中的列表框项
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Listbox item in foreach Condition
提问by Amrit Sharma
I like to get the string of the current item in foreach condition.
我喜欢在 foreach 条件下获取当前项目的字符串。
public void checkStock()
{
foreach (var listBoxItem in listBox1.Items)
{
if (Convert.ToInt32(GetStock(listBox1.Items.ToString())) == 0)
{
MessageBox.Show("Item not in stock ");
}
}
}
So that I can display the name of the item that is not in stock like "
这样我就可以显示没有库存的商品的名称，例如“
MessageBox.Show("{0}" +"not in stock" , listbox.items.ToString());
采纳答案by Jeff
public void checkStock()
{
foreach (var listBoxItem in listBox1.Items)
{
// use the currently iterated list box item
MessageBox.Show(string.Format("{0} is not in stock!",listBoxItem.ToString()));
}
}
I dont know how you are supposed to check if it really IS in stock though - this basically just iterates the collection, and prints out each item. You didn't specify how to check the stock.
我不知道你应该如何检查它是否真的有库存 - 这基本上只是迭代集合，并打印出每个项目。您没有指定如何检查库存。
回答by Sergio
This'l work as well:
这也可以：
MessageBox.Show("{0} not in stock", listBoxItem.ToString());
回答by CloudyMarble
Use the string.formatmethod with the foreach local variable listBoxItemwhich i guess should be used to check wether the item is in the stok too.
使用带有 foreach 局部变量的string.format方法listBoxItem，我想应该使用它来检查项目是否也在 stok 中。
public void checkStock()
{
foreach (var listBoxItem in listBox1.Items)
{
if (Convert.ToInt32(GetStock(listBoxItem.ToString())) == 0)
{
MessageBox.Show(string.Format("{0} is not in stock!",listBoxItem.ToString()));
}
}
}
回答by Debashish Tripathy
You can use listBoxItem local variable inside if clause.
您可以在 if 子句中使用 listBoxItem 局部变量。
