.Net基础:C#中对DatagridView部分常用操作

.NET技术    2009-08-01 08:55  

  0(最基本的技巧)、获取某列中的某行(某单元格)中的内容

  this.currentposition = this.dataGridView1.BindingContext

  [this.dataGridView1.DataSource, this.dataGridView1.DataMember].Position;

  bookContent = this.database.dataSet.Tables[0].Rows

  [this.currentposition][21].ToString().Trim();

  MessageBox.Show(bookContent);

  
1、自定义列

  
//定义列宽

  this.dataGridView1.Columns[0].Width = 80;

  this.dataGridView1.Columns[1].Width = 80;

  this.dataGridView1.Columns[2].Width = 180;

  this.dataGridView1.Columns[3].Width = 120;

  this.dataGridView1.Columns[4].Width = 120;

  Customize Cells and Columns in the Windows Forms

  DataGridView Control by Extending TheirBehavior and

  AppearanceHost 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 ControlSamples:

  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 Controls

  
4、可以改变表格线条风格

   

  Change the Border and Gridline Styles in

  the Windows Forms DataGridView ControlSamples:

  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 ControlSamples:

  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 ControlSamples:

  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 ControlSamples:

  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 ControlSamples:

  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 ControlSamples:

  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 ControlSamples:

  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 Control

  12、设置指定的列只读

  Make Columns in the Windows Forms DataGridView Control Read-OnlySamples:

  dataGridView1.Columns["CompanyName"].ReadOnly = true;

  13、移去自动生成的列

  Remove Autogenerated Columns from a Windows Forms DataGridView ControlSample:

  dataGridView1.AutoGenerateColumns

  = true;dataGridView1.DataSource

  = customerDataSet;dataGridView1.Columns.Remove ("Fax");

  或:dataGridView1.Columns["CustomerID"].Visible = false;

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