C＃中的dataGridView1实现上一条，下一条，首记录，尾记录 总是有些小问题，请高手帮忙

Question

            try
            {
                //int ColInd = 0;
                //if (dataGridView1.CurrentCell.ColumnIndex == -1 || dataGridView1.CurrentCell.ColumnIndex > 1)
                //    ColInd = 0;
                //else
                //    ColInd = dataGridView1.CurrentCell.ColumnIndex;
                if ((((ToolStripButton)sender).Name) == "N_First")
                {
                    dataGridView1.CurrentCell = this.dataGridView1[ColInd, 0];
                    MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 0, 0, 1, 1);
                }
                if ((((ToolStripButton)sender).Name) == "N_Previous")
                {
                    if (dataGridView1.CurrentCell.RowIndex == 0)
                    {
                        MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 0, 0, 1, 1);
                    }
                    else
                    {
                        dataGridView1.CurrentCell = this.dataGridView1[ColInd, dataGridView1.CurrentCell.RowIndex - 1];
                        MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 1, 1, 1, 1);
                    }
                }
                if ((((ToolStripButton)sender).Name) == "N_Next")
                {
                    if (dataGridView1.CurrentCell.RowIndex == dataGridView1.RowCount - 2)
                    {
                        MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 1, 1, 0, 0);
                    }
                    else
                    {
                        dataGridView1.CurrentCell = this.dataGridView1[ColInd, dataGridView1.CurrentCell.RowIndex + 1];
                        MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 1, 1, 1, 1);
                    }
                }
                if ((((ToolStripButton)sender).Name) == "N_Cauda")
                {
                    dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex, dataGridView1.RowCount - 1];
                    MyMC.Ena_Button(N_First, N_Previous, N_Next, N_Cauda, 1, 1, 0, 0);
                }
            }
            catch (Exception ex)
            {
                Cursor = Cursors.Default;
                ExceptionExt.ShowExceptionMessage(ex);
            }DataGridView异常

Answer 1

用BindingSource控件的Postion来实现比较简单

Answer 2

LZ是想实现分页？直接在SQL里面写比较好

Answer 3

 private void btn首记录File_Click(object sender, EventArgs e)
{
    int rowNum = 1;
    lbl行号.Text = Convert.ToString(rowNum);
    dgvRPG(dgv, rowNum);
}private void btn上一记录File_Click(object sender, EventArgs e)
{
    int rowNum = Convert.ToInt32(lbl行号.Text);
    if (rowNum - 1 < 1)
        rowNum = 1;
    else
        rowNum = rowNum - 1;
    lbl行号.Text = Convert.ToString(rowNum);
    dgvRPG(dgv, rowNum);
}private void btn下一记录File_Click(object sender, EventArgs e)
{
    int rowNum = Convert.ToInt32(lbl行号.Text);
    if (rowNum + 1 > dgv.Rows.Count)
        rowNum = dgv.Rows.Count;
    else
        rowNum = rowNum + 1;
    if (rowNum < 1)
        rowNum = 1;
    lbl行号.Text = Convert.ToString(rowNum);
    dgvRPG(dgv, rowNum);
}private void btn尾记录File_Click(object sender, EventArgs e)
{
    int rowNum = dgv.Rows.Count;
    if (rowNum < 1)
        rowNum = 1;
    lbl行号.Text = Convert.ToString(rowNum);
    dgvRPG(dgv, rowNum);
}public void dgvRPG(DataGridView dgv, int rowNum)
{
    try
    {
        if (dgv.CurrentCell != null)
        {
            dgv.ClearSelection();
            dgv.Rows[rowNum - 1].Cells[dgv.CurrentCell.ColumnIndex].Selected = true;
            dgv.CurrentCell = dgv.Rows[rowNum - 1].Cells[dgv.CurrentCell.ColumnIndex];
        }
   }
   catch
   { }
}