C# · 12月 28, 2021

C#实现DataGridView控件行列互换的方法

本文实例讲述了C#实现DataGridView控件行列互换的方法。分享给大家供大家参考。具体如下:

该示例程序是一个Windows窗体应用程序,有左右两个DataGridView控件:dgvLeft和dgvRight

dgvRight除时间外的每一行是dgvLeft的一列

private void Form1_Load(object sender,EventArgs e){ //C#中确定控件DataGridView根据内容自动调整列宽长度的属性 //是AutoSizeColumnsMode,将它的值设置为AllCells时可以达到该效果。 //调整行每行头部的宽度(可以更好地显示出数字) this.dgvLeft.RowHeadersWidth = 50; this.dgvRight.RowHeadersWidth = 50; //左侧数据表 DataTable dtLeft = new DataTable(); dtLeft.Columns.Add(“C1”); dtLeft.Columns.Add(“C2”); dtLeft.Columns.Add(“C3”); dtLeft.Columns.Add(“TIME”); dtLeft.Rows.Add(“1-1″,”1-2″,”1-3”,DateTime.Now.ToShortTimeString()); dtLeft.Rows.Add(“2-1″,”2-2″,”2-3”,DateTime.Now.ToShortTimeString()); dtLeft.Rows.Add(“3-1″,”3-2″,”3-3”,DateTime.Now.ToShortTimeString()); dtLeft.Rows.Add(“4-1″,”4-2″,”4-3”,DateTime.Now.ToShortTimeString()); dtLeft.Rows.Add(“5-1″,”5-2″,”5-3”,DateTime.Now.ToShortTimeString()); dtLeft.Rows.Add(“6-1″,”6-2″,”6-3”,DateTime.Now.ToShortTimeString()); dgvLeft.DataSource = dtLeft; //右侧数据表,是左侧数据表的转置 DataTable dtRight = new DataTable(); for (int i = 0; i < dtLeft.Rows.Count; i++) { dtRight.Columns.Add(“C” + i); } dtRight.Columns.Add(“TIME”); for (int i = 0; i < dtLeft.Columns.Count – 1; i++) { object[] obj = new object[dtLeft.Rows.Count + 1]; for (int j = 0; j < dtLeft.Rows.Count; j++) { obj[j] = dtLeft.Rows[j][i]; } obj[obj.Length – 1] = DateTime.Now.ToShortTimeString(); dtRight.Rows.Add(obj); } dgvRight.DataSource = dtRight;}

每一行的行号可以通过下面的方法添加

//DataGridView 控件 dgvLeft 的 RowsAdded 事件private void dgvLeft_RowsAdded(object sender,DataGridViewRowsAddedEventArgs e){ for (int i = 0; i < dgvLeft.Rows.Count; i++) { this.dgvLeft.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight; this.dgvLeft.Rows[i].HeaderCell.Value = i.ToString(); }}//DataGridView 控件 dgvLeft 的 RowsRemoved 事件private void dgvLeft_RowsRemoved(object sender,DataGridViewRowsRemovedEventArgs e){ for (int i = 0; i < dgvLeft.Rows.Count; i++) { this.dgvLeft.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight; this.dgvLeft.Rows[i].HeaderCell.Value = i.ToString(); }}//DataGridView 控件 dgvRight 的 RowsAdded 事件private void dgvRight_RowsAdded(object sender,DataGridViewRowsAddedEventArgs e){ for (int i = 0; i < dgvRight.Rows.Count; i++) { this.dgvRight.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight; this.dgvRight.Rows[i].HeaderCell.Value = i.ToString(); }}//DataGridView 控件 dgvRight 的 RowsRemoved 事件private void dgvRight_RowsRemoved(object sender,DataGridViewRowsRemovedEventArgs e){ for (int i = 0; i < dgvRight.Rows.Count; i++) { this.dgvRight.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight; this.dgvRight.Rows[i].HeaderCell.Value = i.ToString(); }}

运行效果如下图所示:

希望本文所述对大家的C#程序设计有所帮助。