DataGrid中由某列的值设定行的颜色

王朝c#·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

今天真是的,又被界面搞的晕头转向.

为了实现.Net window DataGrid 的某一行可以根据该行某列的值的内容设定该行颜色的功能.

先贴一个连接,里面有DataGrid很多功能扩充的解决方案Windows Forms Datagrid

不过没有我这个需求的解决方案,最后终于还是在同事的帮助下搞定了.

由某一个单元格的值设定该单元格的颜色的实现我就不贴了,上面的连接里面有解决方案.

下面是由某列的值设定整行颜色的一个解决方案. 关键是在定制的DataGridTextBoxColumn里面添加一个DataView的属性,另外重载Paint() .

在使用DataGridTextBoxColumn的时候,将DataGrid绑定的DataView赋值给它.

public class public class DataGridColoredTextBoxColumn : DataGridTextBoxColumn

{

private System.Data.DataView m_bindDataView;

public DataView BindingDataView

{

get

{

return m_bindDataView;

}

set

{

m_bindDataView = value;

}

}

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)

{

// the idea is to conditionally set the foreBrush and/or backbrush

// depending upon some crireria on the cell value

// Here, we color anything that begins with a letter higher than 'F'

try

{

//从DataView中取值,"ItemType"为行的名称

string colValue = this.BindingDataView[rowNum]["ItemType"].ToString();

char val = colValue[0];

if( val > 'F' ) //如果首字母大于 'F'

{

backBrush = new SolidBrush(Color.BlueViolet );

foreBrush = new SolidBrush(Color.White);

}

}

catch(Exception ex)

{

//empty catch

}

finally

{

// make sure the base class gets called to do the drawing with

// the possibly changed brushes

base.Paint(g, bounds, source, rowNum, backBrush, foreBrush, alignToRight);

}

}

}

使用的例子

DataGridColoredTextBoxColumn colExceptionType = new DataGridColoredTextBoxColumn();

colItemType.BindingDataView = dtOrderItem.DefaultView; //将table的view赋值

colItemType.HeaderText =“ItemType”;

colItemType.MappingName = “ItemType“;

colItemType.Width = 90;

colItemType.NullText = "";

tablestyle.GridColumnStyles.Add(colItemType);

 
 
 
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