Winform dataGridView 用法

//方法一 表头调换， 后台调用 

this.dataGridView1.Columns["ProductName"].DisplayIndex = 0;

 

//方法二  表头调换，属性设置， 页面上拖拽

this.dataGridView1.AllowUserToOrderColumns = true;

 

//3.时间控件默认为空

public WeighRecord()
{
InitializeComponent();

this.RecordTimepx.Format = DateTimePickerFormat.Custom;
this.RecordTimepx.CustomFormat = " ";

}

private void RecordTimepx_ValueChanged(object sender, EventArgs e)
{
this.RecordTimepx.Format = DateTimePickerFormat.Long;
this.RecordTimepx.CustomFormat = null;
}

 

 

//4.弹出窗口

       private void ShowSetBtn_Click(object sender, EventArgs e)
       {

            //传入值
            var childList = new List<TableHeader>();
            var headsSet = new WeighRecordSet(childList);
            //事件+回传值
            headsSet.itemTextChanged += new EventHandler((sender1, e1) =>
            {
                childList = headsSet.list; //回传值   ///其他逻辑 刷新页面啥的
            });

            //弹出窗体
            headsSet.ShowDialog();            
     }    

  public partial class WeighRecordSet : Form
    {
        public List<TableHeader> list { get; set; }
        public event EventHandler itemTextChanged;
        public WeighRecordSet()
        {
            InitializeComponent();
        }

        public WeighRecordSet(List<TableHeader> list)
        {
            InitializeComponent();
        }

        //确定
        private void SaveBtn_Click(object sender, EventArgs e)
        {
            //事件
            if (itemTextChanged != null)
            {
                itemTextChanged(this, e);
            }
            this.Close();
        }
    }

 

// 5.dataGridView  单元格修改前后

        //修改前
        string strBefore = "";
        private void dataGridView1_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
        {
            //选择行
            this.dataGridView1.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;

            strBefore = this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
            string strField = this.dataGridView1.Columns[e.ColumnIndex].DataPropertyName;
            MessageBox.Show("修改前=" + strBefore);
        }
        //修改后
        private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
        {
            string strAfter = this.dataGridView1.CurrentRow.Cells[e.ColumnIndex].Value.ToString();
            if (strAfter == strBefore)
            {
                return;
            }
            MessageBox.Show("修改后=" + strAfter);
        }

 //6.弹出是否删除对话框

 MessageBoxButtons btn = MessageBoxButtons.YesNo;
            if (MessageBox.Show("确定要删除么？", "删除数据", btn) == DialogResult.Yes)
            {
            }