DataGridView 小技巧

只读属性设定 datagridview.ReadOnly = True 行自动追加 datagridview.AllowUserToAddRows = False 删除行允许 datagridview.AllowUserToDeleteRows = False 行副设置 datagridview.AllowUserToResizeRows = False datagridview.ColumnHeadersHeightSizeMode =DataGridViewColumnHeadersHeightSizeMode.DisableResizing 行表示 datagridview.RowHeadersVisible = False 行选择模式 datagridview.SelectionMode = DataGridViewSelectionMode.FullRowSelect 复数行选择 datagridview.MultiSelect = True 选择状态解除 datagridview.ClearSelection() 文字设置位置 datagridview.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter 选择后行的颜色 datagridview.DefaultCellStyle.SelectionBackColor = Color.GreenYellow datagridview.DefaultCellStyle.SelectionForeColor = Color.Black 行幅自动调整 datagridview.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill DataGridView常用属性、方法 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 Controls 4、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 Control 12、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 = "NA"; e.Row.Cells["Country"].Value = "USA"; e.Row.Cells["CustomerID"].Value = NewCustomerId(); } 17、数据验证 Validate Data in the Windows Forms DataGridView Control Samples： private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e) { // Validate the CompanyName entry by disallowing empty strings. if (dataGridView1.Columns[e.ColumnIndex].Name == "CompanyName") { if (e.FormattedValue.ToString() == String.Empty) { dataGridView1.Rows[e.RowIndex].ErrorText = "Company Name must not be empty"; e.Cancel = true; } } }   //表的样式 public void DisplayCol(DataGridView dgv, String dataPropertyName, String headerText, int colWidth) { //dgv.AutoGenerateColumns = false; DataGridViewTextBoxColumn obj = new DataGridViewTextBoxColumn(); obj.DataPropertyName = dataPropertyName; //要显示的数据 obj.HeaderText = headerText; //列头名称 obj.Name = dataPropertyName; //列的名称 //obj.Resizable = DataGridViewTriState.True; obj.Width = colWidth; //列宽度 dgv.Columns.AddRange(new DataGridViewColumn[] { obj }); } this.dgvBookRevert.ClearSelection(); //清除选中行 this.dgvBookRevert.Columns[0].DefaultCellStyle.BackColor = Color.Peru; //第一列的样色 foreach (DataGridViewColumn dgvc in dgvBookRevert.Columns) //除了第一列可以编辑，其余不可编辑 { if (dgvc.Name == "选择") { dgvc.ReadOnly = false; } else { dgvc.ReadOnly = true; } } dgvBookRevert.Columns["BorrowDays"].DefaultCellStyle.Format = "yyyy-MM-dd HH:mm:ss.fff"; //时间的格式 dgvBookRevert.Columns["DuetoDays"].DefaultCellStyle.Format = "yyyy-MM-dd"; //时间的格式 dgvBookRevert.Columns["TSMoney"].DefaultCellStyle.Format = "C2"; //货币的格式 dgvBookRevert.Columns["QKMoney"].DefaultCellStyle.Format = "C2"; this.dgvBookRevert.Columns[0].Width = 45; this.dgvBookRevert.ClearSelection(); //清除选中行 this.dgvBookRevert.Columns[0].DefaultCellStyle.BackColor = Color.MediumSlateBlue; //第一列的样色