C#-重新封装DataGridView控件类
由于项目的需要，每个模块都要添加一个DataGridView控件来显示数据，并且对控件的要求基本一致，于是就重新封装了一个新的NewDataGridView控件类。
一、需求和步骤：
先创建一个对象实例：NewDataGridViewndgv = new NewDataGridView(this,form11, form22)
1、通过addDGV(row,column)方法添加row行column列的NewDataGridView类中的ndgv。
2、为NewDataGridView对象设置表头，通过modifyDGVHeader(ndgv.dataGV,ColumnHeader)方法，参数是DataGridView和表头的ColumnHeader数组。
3、通过modifyDGVRow(ndgv.dataGV,rows)方法，向ndgv中添加我们需要添加的信息，参数是DataGridView和信息的rows数组
4、通过addCheckBox(ndgv.dataGV)向ndgv中添加CheckBox列，参数是DataGridView。
5、通过.addDGVModifyButton(ndgv.dataGV)向ndgv中添加“修改/编辑”的窗体，参数是DataGridView。
6、通过addDGVDelButton(ndgv.dataGV)向ndgv中添加“删除”的窗体
7、通过dataGV_CellPainting(objectsender, DataGridViewCellPaintingEventArgs e)合并部分表头，实例中的“操作”。
二、主窗体的代码如下：（记得要声明两个子窗体，并将窗体对象传到NewDataGridView（this, form11, form22）里边）。
Form11 form11;
Form22 form22;
private void HelpForm_Load(object sender, EventArgs e)
{
int row = 4;
int column = 5;
//在你的窗体内创建NewDataGridView(this)的实例对象，别忘了“this”，form11和form22是添加的addDGVModifyButton(ndgv.dataGV)和ndgv.addDGVDelButton
NewDataGridView ndgv = new NewDataGridView(this, form11, form22);
ndgv.addDGV(row, column);//添加row行column列的NewDataGridView
string[] ColumnHeader = { "编号", "姓名", "年龄", "性别", "总成绩" };//它的数组的长度必须和datagridview的列数保持一致
ndgv.modifyDGVHeader(ndgv.dataGV, ColumnHeader);
string[][] rows = { new string[] { "0001", "小吕", "28", "男", "99" }, new string[] { "0002", "小吕", "28", "男", "99" }, new string[] { "0003", "小吕", "28", "男", "99" } };
ndgv.modifyDGVRow(ndgv.dataGV, rows);//向DataGridView中添加我们需要添加的信息
ndgv.addCheckBox(ndgv.dataGV);//向DataGridView中添加CheckBox
ndgv.addDGVModifyButton(ndgv.dataGV);//向DataGridView中添加“修改/编辑”的窗体
ndgv.addDGVDelButton(ndgv.dataGV);//向DataGridView中添加“删除”的窗体
}
//该方法是在主窗体中控制DataGridView中的Button下的子窗体（一）-----“实例中的“修改/编辑””
public static void control_Modify_Form(Form form11)
{
form11 = new Form11();//“修改/编辑”窗体
form11.Show();
//form11.Visible = true;
}
//该方法是在主窗体中控制DataGridView中的Button下的子窗体（二）-----“实例中的“删除””
public static void control_Del_Form(Form form22)
{
form22 = new Form22();//“删除”窗体
form22.Show();
}
三、NewDataGridView类的代码如下所示：
///
/// 创建人：崔洪振
/// 创建时间：2016-10-18
/// 作用：重新封装DataGridView控件
///
public class NewDataGridView
{
Form subForm1;//子窗体，实例以“修改/编辑”为例
Form subForm2;//子窗体，实例以“删除”为例
public DataGridView dataGV;
private int row = 4;
private int column = 5;
public NewDataGridView(Form form,Form SubForm1, Form SubForm2)
{
dataGV = new DataGridView();
dataGV.ForeColor = Color.Black;
form.Controls.Add(dataGV);
dataGV.Height = form.Height - 135;
dataGV.Width = form.Width - 10;
this.subForm1 = SubForm1;
this.subForm2 = SubForm2;
}
public void addDGV(int row, int column)
{
//dv.MouseDown += new MouseEventHandler(dv_MouseDown);
dataGV.CellClick += new DataGridViewCellEventHandler(dataGV_CellContentClick);
dataGV.CellPainting += new DataGridViewCellPaintingEventHandler(dataGV_CellPainting);
//dataGV.ColumnWidthChanged += new DataGridViewColumnEventArgs(dataGV_ColumnWidthChanged);
dataGV.CellClick += new DataGridViewCellEventHandler(dataGV_CellClick);
dataGV.CellMouseLeave += new DataGridViewCellEventHandler(dataGV_CellMouseLeave);
dataGV.CellMouseEnter += new DataGridViewCellEventHandler(dataGV_CellMouseEnter);
dataGV.Location = new Point(5, 70);
dataGV.ColumnHeadersHeight = 30;
//dataGridView1.RowTemplate.Height = 30;
dataGV.EditMode = DataGridViewEditMode.EditOnEnter;
dataGV.EnableHeadersVisualStyles = false;
dataGV.RowHeadersVisible = false;
dataGV.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dataGV.ReadOnly = true;
dataGV.ColumnCount = column;
dataGV.ColumnHeadersVisible = true;
DataGridViewCellStyle columnHeaderStyle = new DataGridViewCellStyle();
columnHeaderStyle.BackColor = Color.Lavender;
//FromArgb(196, 225, 255);
//Color.Lavender;//薰衣草的淡紫色
columnHeaderStyle.Font = new Font("宋体", 12);
columnHeaderStyle.ForeColor = Color.Black;
columnHeaderStyle.SelectionBackColor = Color.White;
columnHeaderStyle.SelectionForeColor = Color.Black;
dataGV.ColumnHeadersDefaultCellStyle = columnHeaderStyle;
dataGV.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;//填满DataGridView
dataGV.AllowUserToAddRows = false;
dataGV.AllowUserToDeleteRows = false;
dataGV.AllowUserToResizeColumns = false;
dataGV.AllowUserToResizeRows = false;
dataGV.BackgroundColor = Color.White;
dataGV.CellBorderStyle = DataGridViewCellBorderStyle.Raised;
dataGV.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Raised;
}
///
/// 添加CheckBox
///
///
public void addCheckBox(DataGridView dgv)
{
DataGridViewCheckBoxColumn dataCheckBox = new DataGridViewCheckBoxColumn();
dataCheckBox.Name = "select";
dataCheckBox.HeaderText = "全选";
dataCheckBox.ReadOnly = false;
//dgv.Columns[0].Frozen = false; //可以设置为冻结列
//dgv.Columns[1].Frozen = false;
dgv.Columns.Insert(0, dataCheckBox); //插入
dgv.Columns[0].Width = 80;
//dataGridView1.Columns.Insert(0, dataCheckBox); //插入
}
public void dataGV_CellMouseEnter(object sender, DataGridViewCellEventArgs e)
{
//鼠标移动到某行时更改背景色
if (e.RowIndex >= 0)
{
dataGV.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.Lavender;
}
}
public void dataGV_CellMouseLeave(object sender, DataGridViewCellEventArgs e)
{
//鼠标移开时还原背景色
if (e.RowIndex >= 0)
{
dataGV.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.White;
}
}
string[] ColumnHeader = { "编号", "姓名", "年龄", "性别", "总成绩" };//它的数组的长度必须和datagridview的列数保持一致
///
/// 添加表头
///
///
///
public void modifyDGVHeader(DataGridView dgv, string[] CH)
{
if (CH.Length == column)
{
for (int i = 0; i < CH.Length; i++)
{
dgv.Columns[i].Name = CH[i];
}
}
else
{
MessageBox.Show("输入的列数和数组标题不一致！");
}
}
string[][] rows = { new string[] { "0001", "小吕", "28", "男", "99" }, new string[] { "0002", "小吕", "28", "男", "99" }, new string[] { "0003", "小吕", "28", "男", "99" } };
//string[,] arr = { { "1", 2, 3, 4 }, { 4, 5, 6, 4 }, { 1, 2, 3, 4 } };
///
/// 写入数据
///
/// 传入DataGridView的对象
/// 要写入的二维数组数据
public void modifyDGVRow(DataGridView dgv, string[][] rows)
{
for (int i = 0; i < rows.Length; i++)
{
dgv.Rows.Add(new DataGridViewRow());
dgv.Rows[i].Height = 30;
for (int j = 0; j < rows[0].Length; j++)
{
dgv.Rows[i].Cells[j].Value = rows[i][j];
}
}
}
///
/// 追加修改列按钮，要弹出修改/编辑“窗体”
///
/// 要修改的DataGridView对象
public void addDGVModifyButton(DataGridView dgv)
{
DataGridViewButtonColumn dgv_button_col_ViewEdit = new DataGridViewButtonColumn(); //修改/编辑
// 设定列的名字
dgv_button_col_ViewEdit.Name = "ViewEdit";
//dgv_button_col_ViewEdit.DefaultCellStyle=
// 在所有按钮上表示"查看/编辑"
dgv_button_col_ViewEdit.UseColumnTextForButtonValue = true;
dgv_button_col_ViewEdit.Text = "查看/编辑";
dgv_button_col_ViewEdit.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
dgv_button_col_ViewEdit.FlatStyle = FlatStyle.Standard;
dgv_button_col_ViewEdit.CellTemplate.Style.BackColor = Color.Lavender;
//dgv_button_col_ViewEdit.DisplayIndex = 0;
// 设置列标题
dgv_button_col_ViewEdit.HeaderText = "";//“查看/编辑”
// 向DataGridView追加
dgv.Columns.Insert(dgv.ColumnCount, dgv_button_col_ViewEdit); //添加“查看/编辑”列按钮
//DataGridViewButtonColumn buttons = new DataGridViewButtonColumn();
//{
// buttons.HeaderText = "Sales";
// buttons.Text = "Sales";
// buttons.UseColumnTextForButtonValue = true;
// buttons.AutoSizeMode =
// DataGridViewAutoSizeColumnMode.AllCells;
// buttons.FlatStyle = FlatStyle.Standard;
// buttons.CellTemplate.Style.BackColor = Color.Honeydew;
// buttons.DisplayIndex = 0;
//}
//DataGridView1.Columns.Add(buttons);
}
///
/// 追加删除列按钮，要弹出删除“窗体”
///
/// 要修改的DataGridView对象
public void addDGVDelButton(DataGridView dgv)
{
DataGridViewButtonColumn dgv_button_col_Del = new DataGridViewButtonColumn(); //删除
//设定列的名字
dgv_button_col_Del.Name = "Delete";
//在所有按钮上表示"删除"
dgv_button_col_Del.UseColumnTextForButtonValue = true;
dgv_button_col_Del.Text = "删除";
dgv_button_col_Del.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
dgv_button_col_Del.FlatStyle = FlatStyle.Standard;
dgv_button_col_Del.CellTemplate.Style.BackColor = Color.Lavender;
//dgv_button_col_Del.DisplayIndex = 1;
//设置列标题
dgv_button_col_Del.HeaderText = "";//“删除”
//向DataGridView追加
dgv.Columns.Insert(dgv.ColumnCount, dgv_button_col_Del); //添加“删除”列按钮
}
///
/// 合并列表头
///
///
///
private void dataGV_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
// 假定需要将表头行第7列单元格与其左单元格合并
if (e.ColumnIndex == (column + 2) && e.RowIndex == -1)
{
Rectangle re = new Rectangle(e.CellBounds.Left - dataGV.Columns[e.ColumnIndex - 1].Width,
e.CellBounds.Top, e.CellBounds.Width + dataGV.Columns[e.ColumnIndex - 1].Width,
e.CellBounds.Height);
e.Graphics.FillRectangle(Brushes.Lavender, re);//保持和前边的颜色一致
Pen pen = new Pen(dataGV.BackgroundColor, 1);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
e.Graphics.DrawLine(pen, re.X, re.Y + re.Height - 1, re.X + re.Width, re.Y + re.Height - 1);//下线
e.Graphics.DrawLine(pen, re.X + re.Width - 1, re.Y, re.X + re.Width - 1, re.Y + re.Height);//右线
//SizeF strSize = e.Graphics.MeasureString(dataGV.Rows[0].Cells[1].Value.ToString()
// + e.Value.ToString(), dataGV.Font);
SizeF strSize = e.Graphics.MeasureString("操作", dataGV.Font);
//e.Graphics.DrawString(dataGV.Rows[0].Cells[1].Value.ToString() + e.Value.ToString(),
// dataGV.Font, Brushes.Black, re.X + (re.Width - strSize.Width) / 2,
// re.Y + (re.Height - strSize.Height) / 2);
e.Graphics.DrawString("操作", dataGV.Font, Brushes.Black, re.X + (re.Width - strSize.Width) / 2,
re.Y + (re.Height - strSize.Height) / 2);
e.Handled = true;
}
}
///
/// CheckBox
///
///
///
private int count = 0;
private void dataGV_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex == -1)//如果单击列表头，全选．
{
if (count % 2 == 0)//(bool)dataGV.Rows[e.RowIndex].Cells[0].EditedFormattedValue == true
{
count++;
for (int i = 0; i < dataGV.RowCount; i++)
{
dataGV.EndEdit();//结束编辑状态．
string re_value = dataGV.Rows[i].Cells[0].EditedFormattedValue.ToString();
dataGV.Rows[i].Cells[0].Value = "true";//如果为true则为选中,false未选中
dataGV.Rows[i].Selected = true;//选中整行。
}
}
else
{
count--;
for (int i = 0; i < dataGV.RowCount; i++)
{
dataGV.EndEdit();//结束编辑状态．
string re_value = dataGV.Rows[i].Cells[0].EditedFormattedValue.ToString();
dataGV.Rows[i].Cells[0].Value = "false";//如果为true则为选中,false未选中
dataGV.Rows[i].Selected = false;//选中整行。
}
}
}
else
{
for (int i = 0; i < dataGV.Rows.Count; i++)
{
////不是当前选中的则checkBox全部设为false
//if (i != e.RowIndex || dataGV.CurrentCell.ColumnIndex != 0)
//{
// DataGridViewCheckBoxCell cell = (DataGridViewCheckBoxCell)dataGV.Rows[i].Cells[0];
// cell.Value = false;
//}
//else
//{
//是当前选中的，要设置为互斥的
if ((bool)dataGV.Rows[e.RowIndex].Cells[0].EditedFormattedValue == true)
{
dataGV.Rows[e.RowIndex].Cells[0].Value = false;
}
else
{
dataGV.Rows[e.RowIndex].Cells[0].Value = true;
}
//}
}
}
}
Form SubForm;
///
/// DataGridView中的Button事件
///
///
///
private void dataGV_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (dataGV.Columns[e.ColumnIndex].Name == "ViewEdit")//跳转到“查看/编辑”窗体
{
//弹出对应的窗体事件
//MessageBox.Show("行: " + e.RowIndex.ToString() + ", 列: " + e.ColumnIndex.ToString() + "; 被点击了");
//int rows = int.Parse(e.RowIndex.ToString()); //点击所在的行号
//int columns = int.Parse(e.ColumnIndex.ToString()); //点击所在的列号
//MessageBox.Show(rows.ToString() + ";" + columns.ToString());
//if(subForm.Visible == false)
//{
// subForm.Show();
//}
//if (Application.OpenForms["Form11"] != null && Application.OpenForms["Form11"].Visible == true)
//{
// subForm.Visible = false;
//}else if (Application.OpenForms["Form11"] != null && Application.OpenForms["Form11"].Visible == false)
//{
// subForm.Visible = true;
//}
//else
//{
// subForm.Show();
//}
helpform.control_Modify_Form(subForm1);
}
if (dataGV.Columns[e.ColumnIndex].Name == "Delete")//跳转到“删除”窗体
{
//弹出对应的窗体事件
//MessageBox.Show("行: " + e.RowIndex.ToString() + ", 列: " + e.ColumnIndex.ToString() + "; 被点击了");
helpform.control_Del_Form(subForm2);
}
}四、运行后的效果图
