我一直在尝试更改Compact Framework DataGrid中一行的背景颜色，但由于.NET CF上的DataGrid与Windows Forms对应版本相比有限，因此收效甚微。我实现目标的唯一成功是，我现在能够根据其值更改单个单元格的背景颜色。我无法操纵我从谷歌搜索获得的代码，因为我在C＃中不是那么好。但是，这是我的代码：
namespace GridColor
{
public delegate void CheckCellEventHandler(object sender, DataGridEnableEventArgs e);
public class DataGridEnableEventArgs : EventArgs
{
private int _column;
private int _row;
private bool _meetsCriteria;
public DataGridEnableEventArgs(int row, int col, bool val)
{
_row = row;
_column = col;
_meetsCriteria = val;
}
public int Column
{
get { return _column; }
set { _column = value; }
}
public int Row
{
get { return _row; }
set { _row = value; }
}
public bool MeetsCriteria
{
get { return _meetsCriteria; }
set { _meetsCriteria = value; }
}
}
public partial class ColumnStyle : DataGridTextBoxColumn
{
//public event CheckCellEventHandler CheckCellEquals;
public event CheckCellEventHandler CheckCellContains;
private int _col;
public ColumnStyle(int column)
{
_col = column;
}
protected override void Paint(Graphics g, Rectangle Bounds, CurrencyManager Source, int RowNum, Brush BackBrush, Brush ForeBrush, bool AlignToRight)
{
bool enabled = true;
if (CheckCellContains != null)
{
DataGridEnableEventArgs e = new DataGridEnableEventArgs(RowNum, _col, enabled);
CheckCellContains(this, e);
if (e.MeetsCriteria)
//g.DrawRectangle(new Pen(Color.Red, 2), Bounds.Y + 1, Bounds.Width - 2, Bounds.Height - 2);
BackBrush = new SolidBrush(Color.PaleGreen);
}
base.Paint(g, Bounds, Source, RowNum, BackBrush, ForeBrush, AlignToRight);
}
}
}
现在我的表格，我有这个：
namespace GridColor
{
public partial class Form1 : Form
{
DataSet ds;
SqlDataAdapter da;
private List<string> compareValues = new List<string>();
public Form1()
{
InitializeComponent();
try
{
addGridStyle(ref dataGrid1);
compareValues.Add("OK");
compareValues.Add("Filling");
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex.ToString());
}
}
private void addGridStyle(ref DataGrid dg)
{
DataGridTableStyle dtStyle = new DataGridTableStyle();
dtStyle.MappingName = "Test";
string connString = "Data Source=192.168.2.16,1433;Initial Catalog=TestDB;User ID=sa;Password=ABC12abc;";
SqlConnection conn = new SqlConnection(connString);
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "SELECT * FROM Test";
ds = new DataSet();
da = new SqlDataAdapter(cmd);
da.Fill(ds, "Test");
for (int i = 0; i < ds.Tables["Test"].Columns.Count; i++)
{
ColumnStyle myStyle = new ColumnStyle(i);
myStyle.MappingName = ds.Tables["Test"].Columns[i].ToString();
if (i == 1)
{
if (ds.Tables["Test"].Columns[i].DataType == System.Type.GetType("System.String"))
myStyle.CheckCellContains += new CheckCellEventHandler(myStyle_CheckCellContains);
}
dtStyle.GridColumnStyles.Add(myStyle);
}
dg.TableStyles.Add(dtStyle);
}
public void myStyle_CheckCellContains(object sender, DataGridEnableEventArgs e)
{
try
{
if (compareValues.Contains((string)dataGrid1[e.Row, e.Column]))
e.MeetsCriteria = true;
else
e.MeetsCriteria = false;
}
catch (Exception ex)
{
e.MeetsCriteria = false;
}
}
private void Form1_Load(object sender, EventArgs e)
{
dataGrid1.DataSource = ds.Tables["Test"];
}
}
}
我应该在代码的哪个部分进行更改，以便如果某个单元符合条件，则整行将被着色而不仅仅是它自己的单元格？
答案 0 :(得分：1)
好吧，我回去找了几年前的代码，我在桌面上做了这个，在更高级的DataGridView出来之前等等。
首先，Microsoft Customizing the Windows Forms DataGrid提供了本教程，其中介绍了如何突出显示整行。
我查看了我的代码，我必须为每个列添加一个自定义列样式，向我处理的主窗体发出一个事件，然后确定该记录的正确颜色。然后，我设置args.Color属性，DataGridColumn将绘制正确的颜色。 所以，是的，你必须让每一列成为你的自定义格式化类，然后你的应用程序逻辑可以处理事件，获取记录数据并确定颜色
**更新：这是一个简单的例子**
public partial class Form1 : Form
{
FormattableTextBoxColumn firstNameColumn = new FormattableTextBoxColumn();
FormattableTextBoxColumn lastNameColumn = new FormattableTextBoxColumn();
public Form1()
{
InitializeComponent();
// add first name col
firstNameColumn.MappingName = "FirstName";
dataGridTableStyle1.GridColumnStyles.Add(firstNameColumn);
firstNameColumn.SetCellFormat += new FormatCellEventHandler(ColumnSetCellFormat);
// add last name col
lastNameColumn.MappingName = "LastName";
lastNameColumn.SetCellFormat += new FormatCellEventHandler(ColumnSetCellFormat);
dataGridTableStyle1.GridColumnStyles.Add(lastNameColumn);
// This just sets up a dummy data source, since I don't have a database in this example
List<PersonTest> peopleList = new List<PersonTest>();
peopleList.Add(new PersonTest
{
FirstName = "Alan",
LastName = "QQQQQ",
HighlightPerson = true
});
peopleList.Add(new PersonTest
{
FirstName = "John",
LastName = "Smith",
HighlightPerson = false
});
BindingSource peopleDataSource = new BindingSource();
peopleDataSource.DataSource = peopleList;
dataGridTableStyle1.MappingName = peopleDataSource.GetListName(null);
dataGrid1.DataSource = peopleDataSource;
}
// I'll cache this brush in the form, just make sure to dispose it (see designer.cs disposing)
SolidBrush highlightBrush = new SolidBrush(Color.Yellow);
// here is the event you can handle to determine the color of your row!
private void ColumnSetCellFormat(object sender, DataGridFormatCellEventArgs e)
{
if ((e.Source.List[e.Row] as PersonTest).HighlightPerson)
e.BackBrush = highlightBrush;
}
// example test class
public class PersonTest
{
public String FirstName { get; set; }
public String LastName { get; set; }
public bool HighlightPerson { get; set; }
}
}
自定义数据网格列
public class FormattableTextBoxColumn : DataGridTextBoxColumn
{
public event FormatCellEventHandler SetCellFormat;
protected override void Paint(Graphics g, Rectangle bounds, CurrencyManager source, int rowNum, Brush backBrush, Brush foreBrush, bool alignToRight)
{
DataGridFormatCellEventArgs e = new DataGridFormatCellEventArgs(rowNum, source);
e.ForeBrush = foreBrush;
e.BackBrush = backBrush;
OnSetCellFormat(e);
base.Paint(g, bounds, source, rowNum, e.BackBrush, e.ForeBrush, alignToRight);
}
private void OnSetCellFormat(DataGridFormatCellEventArgs e)
{
FormatCellEventHandler handler = SetCellFormat;
if (handler != null)
handler(this, e);
}
}
您还需要此DataGridCellEventArgs.cs
public delegate void FormatCellEventHandler(object sender, DataGridFormatCellEventArgs e);
public class DataGridFormatCellEventArgs : EventArgs
{
public int Row;
public CurrencyManager Source;
public Brush BackBrush;
public Brush ForeBrush;
public DataGridFormatCellEventArgs(int row, CurrencyManager manager)
{
this.Row = row;
this.Source = manager;
}
}
以下是您的示例项目：
答案 1 :(得分：0)
我没有和CF一起工作，但是我想我会把它扔出去......如果你可以访问单元格，那么这行不是NamingContainer吗？如果是这样，您可以向上钻取行并应用样式或使用CSS类添加属性。