[英]What is the best way to keep Primary key in Grid
I need to keep primary key in grid so that when I need to update a certain row, I can retrieve the latest data based on the primary key, then display it in fields, and then when user changes the fields values, the data can be updated. 我需要将主键保留在网格中,以便在需要更新特定行时,可以基于主键检索最新数据,然后在字段中显示它,然后当用户更改字段值时,数据可以是更新。
There are some methods that allow me to do that, For example I can take a bound field, set its Visible property to False and bind it to my Primary key column. 有一些方法可以使我做到这一点,例如,我可以获取一个绑定字段,将其Visible属性设置为False并将其绑定到我的主键列。 I also can use DataKeyNames property of the GridView
我也可以使用GridView的DataKeyNames属性
But I dont know which one is the best way to keep primary key hidden in the gridview. 但是我不知道哪种方法是将主键隐藏在gridview中的最佳方法。
You need to use DataKey in gridView. 您需要在gridView中使用DataKey 。
DataKeyNames
will be the column name of your Primary key
. DataKeyNames
将是您的Primary key
的列名称。
Aspx Code (in gridview starting tag): Aspx代码(在gridview的开始标记中):
DataKeyNames = "Customer_ID"
C# Code (to access DataKey): C#代码(用于访问DataKey):
foreach (GridViewRow row in gvCustomers.Rows)
{
string Customer_ID= gvCustomers.DataKeys[row.RowIndex]["Customer_ID"].ToString();
}
Yes you are correct, you can use GridView.DataKeyNames Property 是的,您是正确的,可以使用GridView.DataKeyNames属性
Gets or sets an array that contains the names of the primary key fields for the items displayed in a GridView control.
获取或设置一个数组,该数组包含GridView控件中显示的项目的主键字段的名称。
Something like this: 像这样:
<asp:GridView DataKeyNames = "myID" ...
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