【转】DataGridView新特色(vs2005)

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;

            }

        }

        }