如何将datagridview中的值赋值给相应的文本框
private void 打开数据表ToolStripMenuItem_Click(object sender, EventArgs e)
{
dataGridView1.ColumnCount = 5;
dataGridView1.RowCount = 7;
dataGridView1.Columns[0].HeaderText = "点号";
dataGridView1.Columns[1].HeaderText = "边长";
dataGridView1.Columns[2].HeaderText = "水平角";
dataGridView1.Columns[3].HeaderText = "X坐标";
dataGridView1.Columns[4].HeaderText = "Y坐标";
}
private void 输出ToolStripMenuItem_Click(object sender, EventArgs e)
{
this. textBox1.Text =this. dataGridView1.Rows[6].Cells[4].Value.ToString();
}
请问各位大神,为何我单击子菜单项里面的“打开数据表”,之后给datagridview里面的第七行第五列写入一个数据,之后再单击子菜单项“输出”,这时候文本框中为什么不会显示datagridview里面的第七行第五列写入的数据,而是会报错呢