在DataGridView中将最后一行设置为Frozen [英] Setting last row as Frozen in DataGridView

问题描述

我的网格当前有40行。一次只能显示20行，因此网格上有一个滚动条。

My grid currently has 40 rows. Only 20 rows can be displayed at a time, so the grid has a scrollbar.

我想冻结DataGridView的最后一行，但是滚动条消失了。

I want to freeze the last row of the DataGridView, but then the scrollbar disappears. How to solve this?

推荐答案

您正在使用 DataGridviewRow.Frozen 属性：请参见文档这里。

You are using the DataGridviewRow.Frozen property: see documentation here.

此属性可让您在用户使用一或几行重要
信息时保留它们在DataGridView中滚动。 冻结行上方的所有
行也都被冻结。

从本质上讲，这意味着，如果您冻结最后一行，冻结行上方的所有行也将冻结；

Which essentially means, if you "freeze" the last row, all rows above the frozen row get frozen too; meaning that the scrollbar gets, because you freeze the last row, removed.

回答问题；这意味着滚动条被删除了，因为冻结了最后一行。您不能单独冻结 仅最后一行，这不是冻结属性的性质。

To answer your question; you can not individually "freeze" only the last row, this is not in the nature of Frozen property.

在此文档。但是，它在VB中，因此您必须自己将其翻译为C＃。

There is a workaround documented in this document. However, it is in VB, so you will have to translate this to C# yourself.

实际上，我进一步发现此文档，在C＃中有一个小例子。

Actually looking further I found this document, which has a small example in C#. It appears to have bugs but might get you going towards your goal.

public partial class MyDataGridView : DataGridView
{
    public StatusStrip Footer
    {
        get { return (StatusStrip)this.Controls["Footer"]; }
    }

    private bool _footerVisible;
    [Browsable(false)]
    ///

    /// Sets or Gets the value specifying if a footer bar is shown or not
    ///

    public bool FooterVisible
    {
        get { return _footerVisible; }
        set
        {
            _footerVisible = value;
            this.Controls["Footer"].Visible = _footerVisible;
        }
    }

    public MyDataGridView()
    {
        InitializeComponent();
        StatusStrip footer = new StatusStrip();
        footer.Name = "Footer";
        footer.ForeColor = Color.Black;

        this.Controls.Add(footer);
        ((StatusStrip)this.Controls["Footer"]).Visible = _footerVisible;
        ((StatusStrip)this.Controls["Footer"]).VisibleChanged += new EventHandler(RDataGridView_VisibleChanged);
        this.Scroll += new ScrollEventHandler(RDataGridView_Scroll);
        _footerItems = ((StatusStrip)this.Controls["Footer"]).Items;
    }
}

上述代码可用作用户控件和继承自 DataGridView 。然后添加一个页脚，您可以在其中填充所选的最后一行。如果将所有行的 Frozen 属性设置为False，则滚动条仍然可见。

The above stated code can be used as a usercontrol and inherits from the DataGridView. It then adds a footer which you can fill with the last row of your choice. The scrollbar still will be visible if you set the Frozen property of all rows to False.

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