在C#(winform)中如何设置datagrid某一行的背景色，或字体的颜色啊？高手救命！！（50分）

如题！！！我想根据每行某一字段的内容设置该行的背景色，或是字体的颜色！

16 个解决方案

#1

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace DataGridCellFormatting
{
/// <summary>
/// Form2 的摘要说明。
/// </summary>
public class Form2 : System.Windows.Forms.Form
{
private System.Windows.Forms.DataGrid dataGrid1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public Form2()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.dataGrid1 = new System.Windows.Forms.DataGrid();
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
this.SuspendLayout();
//
// dataGrid1
//
this.dataGrid1.DataMember = "";
this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dataGrid1.Location = new System.Drawing.Point(8, 56);
this.dataGrid1.Name = "dataGrid1";
this.dataGrid1.Size = new System.Drawing.Size(536, 296);
this.dataGrid1.TabIndex = 0;
this.dataGrid1.Navigate += new System.Windows.Forms.NavigateEventHandler(this.dataGrid1_Navigate);
//
// Form2
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(560, 389);
this.Controls.Add(this.dataGrid1);
this.Name = "Form2";
this.Text = "Form2";
this.Load += new System.EventHandler(this.Form2_Load);
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
this.ResumeLayout(false);

}
#endregion

private void FormatGridCells(object sender, DataGridFormatCellEventArgs e)
{
//color row 1 red
if(e.Row == 0)
e.BackBrush = Brushes.Red;
if(e.Row == 1)
e.BackBrush = Brushes.Red;
if(e.Row == 2)
e.BackBrush = Brushes.Red;
if(e.Row == 3)
e.BackBrush = Brushes.Red;

//color column 4 blue
// if(e.Column == 4)
// e.BackBrush = Brushes.Blue;
//
// //set font of some cells to bold
// if( (e.Row + e.Column) % 5 == 0 )
// e.TextFont = new Font(e.TextFont.Name, e.TextFont.Size, FontStyle.Bold);
//
// //set textcolor of some cells to blue
// if( (e.Row + e.Column) % 8 == 0 )
// e.ForeBrush = Brushes.DodgerBlue;
//
// //set font of some cells to bold, underline, italic with white text on green background
// if( (e.Row + e.Column) % 9 == 0 )
// {
// e.TextFont = new Font(e.TextFont.Name, e.TextFont.Size, FontStyle.Bold | FontStyle.Italic | FontStyle.Underline);
// e.ForeBrush = Brushes.White;
// e.BackBrush = Brushes.Green;
// }

}

private DataTable SomeDataTable()
{
DataTable dt = new DataTable("MyTable");

//add some columns
int nCols = 10;
for(int j = 0; j < nCols; ++j)
dt.Columns.Add(new DataColumn(string.Format("col{0}", j), typeof(string)));

//add some rows
int nRows = 40;
for(int i = 0; i < nRows; ++i)
{
DataRow dr = dt.NewRow();
for(int j = 0; j < nCols; ++j)
dr[j] = string.Format("row {0} col {1}", i, j);
dt.Rows.Add(dr);
}

dt.DefaultView.AllowNew = false;//turn off append row
return dt;
}

private void AddCellFormattingColumnStyles(DataGrid grid, FormatCellEventHandler handler)
{
DataGridTableStyle ts = new DataGridTableStyle();

DataTable dt = (DataTable) grid.DataSource;

ts.MappingName = dt.TableName;

for(int j = 0; j < dt.Columns.Count; ++j)
{
DataGridFormattableTextBoxColumn cs = new DataGridFormattableTextBoxColumn(j);
cs.MappingName = dt.Columns[j].ColumnName;
cs.HeaderText = dt.Columns[j].ColumnName;
cs.SetCellFormat += handler;
ts.GridColumnStyles.Add(cs);
}

grid.TableStyles.Clear();
grid.TableStyles.Add(ts);

}
private void dataGrid1_Navigate(object sender, System.Windows.Forms.NavigateEventArgs ne)
{

}

private void Form2_Load(object sender, System.EventArgs e)
{
this.dataGrid1.DataSource = SomeDataTable();

AddCellFormattingColumnStyles(this.dataGrid1, new FormatCellEventHandler(FormatGridCells));
}

public delegate void FormatCellEventHandler(object sender, DataGridFormatCellEventArgs e);

public class DataGridFormatCellEventArgs : EventArgs
{
private int _column;
private int _row;
private Font _font;
private Brush _backBrush;
private Brush _foreBrush;
private bool _useBaseClassDrawing;

public DataGridFormatCellEventArgs(int row, int col, Font font1, Brush backBrush, Brush foreBrush)
{
_row = row;
_column = col;
_font = font1;
_backBrush = backBrush;
_foreBrush = foreBrush;
_useBaseClassDrawing = false;
}

public int Column
{
get{ return _column;}
set{ _column = value;}
}
public int Row
{
get{ return _row;}
set{ _row = value;}
}
public Font TextFont
{
get{ return _font;}
set{ _font = value;}
}

public Brush BackBrush
{
get{ return _backBrush;}
set{ _backBrush = value;}
}
public Brush ForeBrush
{
get{ return _foreBrush;}
set{ _foreBrush = value;}
}
public bool UseBaseClassDrawing
{
get{ return _useBaseClassDrawing;}
set{ _useBaseClassDrawing = value;}
}
}

public class DataGridFormattableTextBoxColumn : DataGridTextBoxColumn
{
//in your handler, set the EnableValue to true or false, depending upon the row & col
public event FormatCellEventHandler SetCellFormat;

private int _col;

public DataGridFormattableTextBoxColumn(int col)
{
_col = col;
}

protected override void Paint(System.Drawing.Graphics g, System.Drawing.Rectangle bounds, System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Brush backBrush, System.Drawing.Brush foreBrush, bool alignToRight)
{
DataGridFormatCellEventArgs e = new DataGridFormatCellEventArgs(rowNum, this._col, this.DataGridTableStyle.DataGrid.Font, backBrush, foreBrush);
if(SetCellFormat != null)
{
SetCellFormat(this, e);
}
if(e.UseBaseClassDrawing)
base.Paint(g, bounds, source, rowNum, backBrush, foreBrush, alignToRight);
else
{
g.FillRectangle(e.BackBrush, bounds);
g.DrawString(this.GetColumnValueAtRow(source, rowNum).ToString(), e.TextFont, e.ForeBrush, bounds.X, bounds.Y);
}
if(e.TextFont != this.DataGridTableStyle.DataGrid.Font)
e.TextFont.Dispose();
}

protected override void Edit(System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Rectangle bounds, bool readOnly, string instantText, bool cellIsVisible)
{
//comment to make cells unable to become editable
base.Edit(source, rowNum, bounds, readOnly, instantText, cellIsVisible);
}

}
}
}

只需要改变FormatGridCells中的行就行了

#2

我up

#3

o,yeah ，也太详细了吧，不错！

#4

也可以直接设置页面文件:
<asp:datagrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 136px; POSITION: absolute; TOP: 296px" runat="server" Height="104px" Width="713px" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" BackColor="White" CellPadding="3" AllowPaging="True" PageSize="3" AutoGenerateColumns="False">
    <SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#669999">
    </SelectedItemStyle>
    <ItemStyle ForeColor="#000066"></ItemStyle>
    <HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#006699"></HeaderStyle>
    <FooterStyle ForeColor="#000066" BackColor="White"></FooterStyle>
<Columns>
    <asp:HyperLinkColumn DataNavigateUrlField="userid" DataNavigateUrlFormatString="" DataTextField="userid" SortExpression="userid" HeaderText="用户ID">
    </asp:HyperLinkColumn>
    <asp:BoundColumn DataField="name" HeaderText="名称">
         <HeaderStyle Width="20%"></HeaderStyle>
    </asp:BoundColumn>
    <asp:BoundColumn DataField="gender" HeaderText="性别">
         <HeaderStyle Width="20%"></HeaderStyle>
    </asp:BoundColumn>
    <asp:BoundColumn DataField="email" HeaderText="EMAIL">
         <HeaderStyle Width="35%"></HeaderStyle>
    </asp:BoundColumn>
</Columns>

#5

因为我最近转.NET就碰到这样的需求,我研究了一下,基本可以满足要求,希望对各位有所帮助,

楼主记得给分啊

#6

顶，接点分^_^
无聊就接分来了

#7

OK,寫的非常好.无聊來了.

#8

我晕！

tkx222(tkx) ！！这个问题有必要回答的这么详细不？

唉！接分狂！！

太想分了吧

#9

看得狂晕，呵呵。支持热情！

#10

我支持一楼的兄弟，只有这样才好

#11

利用DataGrid的ItemStyle样式
<asp:DataGrid
  ID="..."
  ItemStyle-BackColor="Blue"
  ItemStyle-Color="Red"
  Runat="Server"/>
...

#12

我下面有一個例子，希望對你有幫助...

datagrid 的樣式表(DataGridTableStyle)應用...
首先我們先定一個 datatable 和一個datarow

  Private idtb_temp As New DataTable
  Private idrw_row As DataRow

  private sub GetDataTable()
         idtb_temp.Columns.Add("prdodr_subodr_code")              '''定義datatable 的列名

        idtb_temp.TableName = "SearchTable"
        Dim ldcl_header As Windows.Forms.DataGridTextBoxColumn
        Dim ldgts_styles As New Windows.Forms.DataGridTableStyle
        ldgts_styles.SelectionForeColor = System.Drawing.Color.Yellow
         '''選中行的前景色，即字體顏色
        ldgts_styles.SelectionBackColor = System.Drawing.Color.Brown     '''選中行的背景色

        ldgts_styles.ForeColor = System.Drawing.Color.Coral
        ''' datagrid 中將要顯示的字的顏色
        ldgts_styles.AlternatingBackColor = System.Drawing.Color.Cyan
         '''datagrid中奇數行所顯示的顏色
        ldgts_styles.BackColor = System.Drawing.Color.Cyan
       '''datagrid中偶數行所顯示的顏色

        ldgts_styles.AllowSorting = False
         '''些樣式表定義datagrid不允許自動排序..

        ldgts_styles.MappingName = "SearchTable"

        ldcl_header = New Windows.Forms.DataGridTextBoxColumn
         '''實例化一個datagridtextboxcolumn
        ldcl_header.MappingName = "prdodr_subodr_code"
        '''引用前面定義的 “列名”
        ldcl_header.HeaderText = "第一列"
       '''datagrid 中顯示的表列頭文字
        ldcl_header.ReadOnly = True            '''些列設定為只讀
        ldcl_header.TextBox.BorderStyle = BorderStyle.Fixed3D
        ldcl_header.TextBox.ForeColor = System.Drawing.Color.Red

        ldgts_styles.GridColumnStyles.Add(ldcl_header)

        For i As Integer = 0 To 7
            idrw_row = idtb_temp.NewRow
            idrw_row.Item("prdodr_subodr_code") = "第" & i & "行"
            idtb_temp.Rows.Add(idrw_row)

        Next

        idtb_temp.DefaultView.AllowNew = False
        Me.DataGrid1.TableStyles.Add(ldgts_styles)
        Me.DataGrid1.DataSource = idtb_temp
  end sub

#13

tkx222(tkx)
好好好！！！

#14

支持tkx222(tkx)

#15

TO：tkx222(tkx)
这段代码有个问题，我排序之后原有的数据顺序变了，而颜色还是在前面几行，这是不是有点不符合？

#16

支持一楼的师傅，有时间教教我

#1

#2

我up

#3