c# - 在 DevExpress GridView 上更改行颜色

Question

我正在尝试在 devexpress gridview 中将行的颜色更改为绿色。搜索时，我在网站上找到了许多如何执行此操作的示例……但这是一个 Windows 应用程序。我在 Windows 应用程序上找不到任何东西，所以有人可以在这里帮帮我。

我只是想将单行的颜色更改为绿色。

忘了说，它是一个 C# 应用程序。

谢谢您的帮助。

Answer 1

要在运行时更改行颜色，请处理 RowStyle 事件：

    public Color color1;
    public Color color2;
    public int rowhandle;

    private void gridView1_RowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e)
    {
        try
        {
            if (e.RowHandle == rowhandle)
            {
                if (color1 != null && color2 != null)
                {
                    e.Appearance.BackColor = color1;
                    e.Appearance.BackColor2 = color2;
                }
            }
        }
        catch
        {
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        color1 = Color.BurlyWood;
        color2 = Color.DarkOrchid;
        rowhandle = gridView1.FocusedRowHandle;
        gridView1.RefreshRow(rowhandle);
    }

下面的代码将保持颜色：

public partial class Form1 : Form
{

    public Color color1;
    public Color color2;
    public int rowhandle;
    public List<int> rowhandles;

    private void gridView1_RowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e)
    {
        try
        {
            if (rowhandles.Any(x=>x==e.RowHandle))
            {
                if (color1 != null && color2 != null)
                {
                    e.Appearance.BackColor = color1;
                    e.Appearance.BackColor2 = color2;
                }
            }
        }
        catch
        {
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        color1 = Color.BurlyWood;
        color2 = Color.DarkOrchid;
        rowhandle = gridView1.FocusedRowHandle;
        if (!rowhandles.Any(x => x == rowhandle))
            rowhandles.Add(rowhandle);
        gridView1.RefreshRow(rowhandle);
    }

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        Dictionary<int, string> l = new Dictionary<int, string>();
        l.Add(1,"one");
        l.Add(2,"two");
        l.Add(3,"three");
        l.Add(4, "four");
        l.Add(5, "five");
        l.Add(6, "six");
        l.Add(7, "seven");
        l.Add(8, "eight");
        l.Add(9, "nine");

        gridControl1.DataSource = l.ToList();

        rowhandles = new List<int>();
    }

}

Answer 2

我建议您使用以下简单的解决方案：

using DevExpress.XtraGrid;
using DevExpress.XtraGrid.Views.Base;
//...
gridControl1.DataSource = new List<DataObj> {
    new DataObj(){ ID=0, Name="A" },
    new DataObj(){ ID=1, Name="B" },
    new DataObj(){ ID=2, Name="C" },
    new DataObj(){ ID=3, Name="D" },
};
gridView1.CustomDrawCell += gridView1_CustomDrawCell;
//...
void gridView1_CustomDrawCell(object sender, RowCellCustomDrawEventArgs e) {
    if(selectedRowHandle.GetValueOrDefault(GridControl.InvalidRowHandle) == e.RowHandle) {
        e.Appearance.BackColor = Color.Green;
    }
}
int? selectedRowHandle;
void button1_Click(object sender, EventArgs e) {
    int prevSelectedRowHandle = selectedRowHandle.GetValueOrDefault(GridControl.InvalidRowHandle);
    if(prevSelectedRowHandle != GridControl.InvalidRowHandle)
        gridView1.RefreshRow(prevSelectedRowHandle); // reset row-style to default
    selectedRowHandle = gridView1.FocusedRowHandle;
    gridView1.InvalidateRow(gridView1.FocusedRowHandle); // row painting request
}

此解决方案基于仅需要更改某些特定行外观时首选的GridView.CustomDrawCell事件。它也适用于当前选定的行而不是GridView.RowCellStyle。

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