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
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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;
}
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每一行的行号可以通过下面的方法添加
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//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();
}
}
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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。