[英]How to increment the Auto Generated Id
I'm pretty new to C#.我对 C# 很陌生。 I want to increment an
int
variable id
by 1 and insert it into a datagridview.我想将
int
变量id
增加 1 并将其插入到 datagridview 中。 The problem is, it doesn't increment, it stays at 1.问题是,它不会增加,而是保持在 1。
Here's my code for adding the data to datagridview这是我将数据添加到 datagridview 的代码
class QuantityCtrl : Quantity
{
private ManageSale _manageSale;
public QuantityCtrl(ManageSale manageSale)
{
_manageSale = manageSale;
}
private void BtnOk_Click(object sender, EventArgs e)
{
_manageSale.dgvItemList.Rows.Add
(
GenerateId(),
_manageSale.lblName.Text,
_manageSale.lblPrice.Text,
_manageQuantity.txtDiscount.Text,
_manageQuantity.txtQuantity.Text,
Total
);
}
}
Here's my code for incrementing这是我的递增代码
class Quantity
{
public int OrderId = 1;
public int GenerateId()
{
return OrderId++;
}
}
I solved it thanks to Brendan.感谢 Brendan,我解决了这个问题。 I hope it could be a referrence for some developers :) and If someone has a better way of incrementing you can answer it Thank you.
我希望它可以成为一些开发人员的参考:) 如果有人有更好的递增方式,您可以回答它,谢谢。
public static int OrderId = 1;
Another way of doing it would be creating a new class in a folder inside your solution which contains the list and the proprieties :另一种方法是在解决方案内的文件夹中创建一个新类,其中包含列表和属性:
class IDS
{
#region Proprieties
public int Id { get; set; }
#endregion
#region Lists
public List<IDS> _ids = new List<IDS>();
#endregion
}
Now, you'll need to link the class to the main, for that, go in your main code and put at the top :现在,您需要将类链接到主类,为此,进入您的主代码并放在顶部:
using SolutionName.Folder;
Next go to your button event and simply put this:接下来转到您的按钮事件并简单地输入:
private void btnAutoGen_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
int iId = 0;
try
{
var req = (from value in _id
select value.Id).Max() + 1;
iId = req;
}
catch (InvalidOperationException)
{
iId = 1;
}
You now have a button that auto increment.您现在有一个自动递增的按钮。
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