关于 WinForm 里 DataGridView , TreeView 的一点记录

一、编程方式修改被绑定的数据对象

//利用 DataBindingComplete 在数据绑定操作完成之后发生

private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)

{

//编辑绑定列的显示定义，具体表现为 DataGridViewColumn 设置

for (int i = 0; i < this.dataGridView1.Columns.Count; i++)

{

this.dataGridView1.Columns["id"].DataPropertyName = "";

this.dataGridView1.Columns["id"].Visible = true;

}

//编辑绑定每行的单元格值，具体表现为 DataGridViewCell 设置

for (int i = 0; i < dataGridView1.Rows.Count; i++)

{

this.dataGridView1.Rows[i].Cells[0].Value = "1111";

}

}

Tips:

如何：操作 Windows 窗体 DataGridView 控件中的行

ms-help://MS.VSCC.v90/MS.MSDNQTR.v90.chs/dv_fxmclictl/html/522d8944-e073-4488-9673-923f0a8d7214.htm

如何：为 Windows 窗体 DataGridView 控件设置交替行样式

ms-help://MS.VSCC.v90/MS.MSDNQTR.v90.chs/dv_fxmclictl/html/699ef759-458c-426d-ac87-7c7e71b018ae.htm

如何：创建未绑定的 Windows 窗体 DataGridView 控件

ms-help://MS.VSCC.v90/MS.MSDNQTR.v90.chs/dv_fxmclictl/html/b5d4b47d-9a28-4d88-9dba-0a3c90fba71d.htm

如何：访问绑定到 Windows 窗体 DataGridView 行的对象（使用 DataGridViewRow.DataBoundItem 属性）

ms-help://MS.VSCC.v90/MS.MSDNQTR.v90.chs/dv_fxmclictl/html/0e05748f-4403-4eb8-8b2f-b098108181b5.htm

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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 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)

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)

17、数据验证

Validate Data in the Windows Forms DataGridView Control

Samples：

private void dataGridView1_CellValidating(object sender,

DataGridViewCellValidatingEventArgs e)

18、数据提交到dataset中

DataSet ds = new DataSet("MyDataSet");

ds.Tables[biaom.Trim()].Rows.Clear();

try

catch (Exception)

DataGridView显示时一行都不选

dataGridView1.CurrentRow.Selected = false;

TreeView

1.单层子节点不可编辑

虽然在 TreeView 可以通过设定 LableEdit 属性来让节点不可被编辑,

但是如果要限定 单层节点不被编辑则麻烦的多,

这时候可以利用 节点编辑前事件来让特定的节点取消编辑

//编辑前事件, Level 1不可编辑

private void tvModel_BeforeLabelEdit(object sender, NodeLabelEditEventArgs e)

if (e.Node.Level == 1)

e.CancelEdit = true;

}

}