DataGridView常用屬性、方法[@more@]

1、自定義列

Customize Cells and Columns in the Windows Forms DataGridView Control by Extending Their

Behavior and Appearance

Host Controls in Windows Forms DataGridView Cells

繼承 DataGridViewTextBoxCell 類生成新的Cell類，然後再繼承 DataGridViewColumn 生成新的Column類，並指定

CellTemplate為新的Cell類。新生成的Column便可以增加到DataGridView中去。

2、自動適應列寬

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、可以繫結並顯示物件

Bind Objects to Windows Forms DataGridView Controls

4、可以改變表格線條風格

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、動態改變列是否顯示，和動態改變列的顯示順序

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、可以在列中顯示影像

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、格式化顯示內容:

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、在拖動列的捲軸時可以將指定的列凍結

Freeze Columns in the Windows Forms DataGridView Control

Samples：將指定列及以前的列固定不動

this.dataGridView1.Columns["AddToCartButton"].Frozen = true;

9、獲取選擇的單元格,行,列

Get the Selected Cells, Rows, and Columns in the Windows Forms DataGridView Control

Samples:

見msdn。

10、顯示錄入時出現的錯誤資訊

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、大資料量顯示採用Virtual Mode

Implement Virtual Mode in the Windows Forms DataGridView Control

12、設定指定的列只讀

Make Columns in the Windows Forms DataGridView Control Read-Only

Samples：

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

13、移去自動生成的列

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、自定義選擇模式

Set the Selection Mode of the Windows Forms DataGridView Control

Sample：

this.dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;

this.dataGridView1.MultiSelect = false;

15、自定義設定游標進入單元格是否編輯模式（編輯模式）

Specify the Edit Mode for the Windows Forms DataGridView Control

this.dataGridView1.EditMode = DataGridViewEditMode.EditOnEnter;

16、新行指定預設值

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、資料驗證

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;

}

DataGridView新特色(vs2005beta1)

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