datagridview 数据处理方法 修改 删除 添加 下拉类表 弹出窗口

selectindex = e.RowIndex;

}

private void dataGridView1_CellValueChanged(object sender,

DataGridViewCellEventArgs e)

{

int mycellindex = e.RowIndex;

//MessageBox.Show(dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString());

if (dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString() == "" || dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString() == null)

MessageBox.Show("用户ID不能为空！！！");

else intindex[mycellindex % 20] = mycellindex;

// MessageBox.Show(mycellindex.ToString());

}

int pagenumber = 0;

int pagesum = 0;

int pagesize=2; //每页的条目数

private void button7_Click(object sender, EventArgs e) //显示下一页内容 {

DataOperate dataoperate = new DataOperate();

int pageindex =0 ; //已经显示的条目数

string strSql=null;

if (pagenumber != pagesum)

{

pageindex = pagenumber * pagesize;////已经显示的条目数

strSql = "SELECT TOP " + pagesize.ToString() + " * FROM user_tb1 WHERE id>(select max(id) from (select top " + pageindex.ToString() + " id from user_tb1 order by id))";

}

else if (pagenumber != 1)

{

pageindex = (pagenumber - 1) * pagesize;

strSql = "SELECT TOP " + pagesize.ToString() + " * FROM user_tb1 WHERE id>(select max(id) from (select top " + pageindex.ToString() + " id from user_tb1 order by id))";