C＃中的dataGridView1如何實現上壹條，下壹條，首記錄，尾記錄按鈕？急！！！請高手幫忙！謝謝！

首記錄:this.dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex, 0];

上壹記錄:if (this.dataGridView1.CurrentCell.RowIndex > 0)

{

this.dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex, this.dataGridView1.CurrentCell.RowIndex - 1];

}

下壹記錄:

if (this.dataGridView1.CurrentCell.RowIndex < this.dataGridView1.RowCount - 1)

{

this.dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex, this.dataGridView1.CurrentCell.RowIndex + 1];

}

末記錄:

this.dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex, this.dataGridView1.RowCount - 1];