DataGridView的一些技巧 最近一直跟DataGridView打交道，突然觉得很多技巧性的东西很模糊，经过最近的个人实验操作和从网上查到的资料把对DataGridView操作的一些技巧总结和借鉴了一下，总结如下：1、自定义列 Customize Cells and Columns
in the Windows Forms DataGridView Control
by Extending Their Behavior and Appearance Host Controls
in Windows Forms DataGridView Cells 继承 DataGridViewTextBoxCell 类生成新的Cell类，然后再继承 DataGridViewColumn 生成新的Column类，并指定 CellTemplate为新的Cell类。新生成的Column便可以增加到DataGridView中去。2、自动适应列宽
Programmatically Resize Cells to Fit Content in the Windows Forms DataGridView Control Samples： DataGridView.AutoSizeColumns( DataGridViewAutoSizeColumnCriteria.HeaderAndDisplayedRows);
DataGridView.AutoSizeColumn( DataGridViewAutoSizeColumnCriteria.HeaderOnly,
2, false); DataGridView.AutoSizeRow( DataGridViewAutoSizeRowCriteria.Columns,
2, false); DataGridView.AutoSizeRows( DataGridViewAutoSizeRowCriteria.HeaderAndColumns,
0, dataGridView1.Rows.Count,
false);3、可以绑定并显示对象 Bind Objects to Windows Forms DataGridView Controls4、可以改变表格线条风格
Change the Border and Gridline Styles in the Windows Forms DataGridView Control Samples:
this.dataGridView1.GridColor
= Color.BlueViolet;
this.dataGridView1.BorderStyle
= BorderStyle.Fixed3D;
this.dataGridView1.CellBorderStyle
= DataGridViewCellBorderStyle.None;
this.dataGridView1.RowHeadersBorderStyle
= DataGridViewHeaderBorderStyle.Single;
this.dataGridView1.ColumnHeadersBorderStyle
= DataGridViewHeaderBorderStyle.Single;5、动态改变列是否显示，和动态改变列的显示顺序 Change the Order of the Columns
in the Windows Forms DataGridView Control Samples： customersDataGridView.Columns["CustomerID"].Visible
= false; customersDataGridView.Columns["ContactName"].DisplayIndex
= 0; customersDataGridView.Columns["ContactTitle"].DisplayIndex
= 1; customersDataGridView.Columns["City"].DisplayIndex
= 2; customersDataGridView.Columns["Country"].DisplayIndex
= 3; customersDataGridView.Columns["CompanyName"].DisplayIndex
= 4;6、可以在列中显示图像 Display Images
in Cells of the Windows Forms DataGridView Control Samples： Icon treeIcon
= new Icon(this.GetType(),
"tree.ico"); DataGridViewImageColumn iconColumn
= new DataGridViewImageColumn (); iconColumn.Image
= treeIcon.ToBitmap(); iconColumn.Name
= "Tree"; iconColumn.HeaderText
= "Nice tree"; dataGridView1.Columns.Insert(2,
iconColumn);7、格式化显示内容: Format Data
in the Windows Forms DataGridView Control Samples:
this.dataGridView1.Columns["UnitPrice"].DefaultCellStyle.Format
= "c";
this.dataGridView1.Columns["ShipDate"].DefaultCellStyle.Format
= "d";
this.dataGridView1.DefaultCellStyle.NullValue
= "no entry";
this.dataGridView1.DefaultCellStyle.WrapMode
= DataGridViewWrapMode.Wrap;
this.dataGridView1.Columns["CustomerName"].DefaultCellStyle.Alignment
= DataGridViewContentAlignment.MiddleRight;
8、在拖动列的滚动条时可以将指定的列冻结 Freeze Columns
in the Windows Forms DataGridView Control Samples：将指定列及以前的列固定不动
this.dataGridView1.Columns["AddToCartButton"].Frozen
= true;9、获取选择的单元格,行,列 Get the Selected Cells, Rows,
and Columns in the Windows Forms DataGridView Control Samples: 见msdn。10、显示录入时出现的错误信息 Handle Errors that Occur During
Data Entry in the Windows Forms DataGridView Control Samples：
private
void dataGridView1_DataError(object sender, DataGridViewDataErrorEventArgs e) {
// If the data source raises an exception when a cell value is
// commited, display an error message.
if (e.Exception
!= null
&& e.Context
== DataGridViewDataErrorContext.Commit) { MessageBox.Show("CustomerID value must be unique.");
} }11、大数据量显示采用Virtual Mode Implement Virtual Mode
in the Windows Forms DataGridView Control12、设置指定的列只读 Make Columns
in the Windows Forms DataGridView Control Read-Only Samples： dataGridView1.Columns["CompanyName"].ReadOnly
= true;
13、移去自动生成的列 Remove Autogenerated Columns
from a Windows Forms DataGridView Control Sample: dataGridView1.AutoGenerateColumns
= true; dataGridView1.DataSource
= customerDataSet; dataGridView1.Columns.Remove ("Fax");
或： dataGridView1.Columns["CustomerID"].Visible
= false;14、自定义选择模式 Set the Selection Mode of the
Windows Forms DataGridView Control Sample： this.dataGridView1.SelectionMode
= DataGridViewSelectionMode.FullRowSelect;
this.dataGridView1.MultiSelect
= false;15、自定义设定光标进入单元格是否编辑模式（编辑模式） Specify the
Edit Mode for the Windows Forms DataGridView Control
this.dataGridView1.EditMode
= DataGridViewEditMode.EditOnEnter;16、新行指定默认值 Specify Default Values
for New Rows
in the Windows Forms DataGridView Control Sample：
private
void dataGridView1_DefaultValuesNeeded(object sender, System.Windows.Forms.DataGridViewRowEventArgs e) { e.Row.Cells["Region"].Value
= "WA"; e.Row.Cells["City"].Value
= "Redmond"; e.Row.Cells["PostalCode"].Value
= "98052-6399"; e.Row.Cells["Region"].Value