DataGridView常用属性 《一》

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

        行幅设置
        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;

}

}

}

 

1） 行、列的隐藏

[VB.NET]
' DataGridView1的第一列隐藏
DataGridView1.Columns(0).Visible = False
' DataGridView1的第一行隐藏
DataGridView1.Rows(0).Visible = False

2） 行头、列头的隐藏

[VB.NET]
' 列头隐藏
DataGridView1.ColumnHeadersVisible = False
' 行头隐藏
DataGridView1.RowHeadersVisible = False

3） 行和列的删除

[VB.NET]
' 删除名为"Column1"的列
DataGridView1.Columns.Remove("Column1")
' 删除第一列
DataGridView1.Columns.RemoveAt(0)
' 删除第一行
DataGridView1.Rows.RemoveAt(0)

4） 删除选中行

[VB.NET]
For Each r As DataGridViewRow In DataGridView1.SelectedRows
    If Not r.IsNewRow Then
        DataGridView1.Rows.Remove(r)
    End If
Next

⑦ DataGridView 禁止列或者行的Resize：

1） 禁止所有的列或者行的Resize

[VB.NET]
' 禁止用户改变DataGridView1的所有列的列宽
DataGridView1.AllowUserToResizeColumns = False

'禁止用户改变DataGridView1の所有行的行高
DataGridView1.AllowUserToResizeRows = False