成品效果：
下面是效果實現的所有代碼：
備註：
控件名稱解釋：
首頁(按鈕)-->btnHomePage
上一頁(按鈕)-->btnUpPage
1(按鈕)-->btnShowYe1
2(按鈕)-->btnShowYe2
3(按鈕)-->btnShowYe3
下一頁(按鈕)-->btnNextPage
尾頁(按鈕)-->btnEnd
43(lable)-->lblSumPage
文本框-->txtPage
確定(按鈕)-->btnQueding
#region 分頁 int pageSize = 2;//每頁顯示的條數 int currentPage = 1;//當前頁碼 /// <summary> /// 分頁 /// </summary> /// <param name="pageNo"></param> private void FenYe(int pageNo) { //把最大頁碼傳給總共的頁數lable lblSumPage.Text = getTotalPage().ToString(); ds = new DataSet(); string sql = "select top " + pageSize + " * from Administrator_Log where ID not in ("; sql += "select top (" + (pageNo - 1) + " *" + pageSize + ") ID from Administrator_Log order by ID)order by ID"; adapter = new SqlDataAdapter(sql, DBhelp.conn); if (ds.Tables["Administrator_Log"] != null) { ds.Tables["Administrator_Log"].Clear(); } adapter.Fill(ds, "Administrator_Log"); DataView dv = new DataView(ds.Tables["Administrator_Log"]); this.dgvLog.DataSource = dv; } #endregion #region 跳轉到首頁 /// <summary> /// 跳轉到首頁 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnHomePage_Click(object sender, EventArgs e) { SheZhiBtn(1, 2, 3); SheZhiBtn(false, true, true); currentPage = 1; FenYe(currentPage); } #endregion 跳轉到首頁 #region 上一頁 /// <summary> /// 上一頁 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnUpPage_Click(object sender, EventArgs e) { currentPage--; if (currentPage <= 1) { currentPage = 1; SheZhiBtn(1, 2, 3); SheZhiBtn(false, true, true); FenYe(currentPage); ; MessageBox.Show("已是第一頁！"); return; } SheZhiBtn(currentPage - 1, currentPage, currentPage + 1); SheZhiBtn(true, false, true); FenYe(currentPage); } #endregion #region 下一頁 /// <summary> /// 下一頁 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnNextPage_Click(object sender, EventArgs e) { currentPage++; //判斷當前頁碼是否超過最大頁碼 if (currentPage > getTotalPage()) { SheZhiBtn(currentPage - 3, currentPage - 2, currentPage - 1); SheZhiBtn(true, true, false); currentPage = getTotalPage(); MessageBox.Show("已是最大頁碼"); return; } //SheZhiBtn() SheZhiBtn(currentPage - 1, currentPage, currentPage + 1); SheZhiBtn(true, false, true); FenYe(currentPage); } #endregion #region 設置指定頁按鈕的構造方法 private void SheZhiBtn(int one, int two, int three) { btnShowYe1.Text = one.ToString(); btnShowYe2.Text = two.ToString(); btnShowYe3.Text = three.ToString(); } private void SheZhiBtn(bool one, bool two, bool three) { btnShowYe1.Enabled = one; btnShowYe2.Enabled = two; btnShowYe3.Enabled = three; //if (!btnShowYe1.Enabled) //{ // btnShowYe1.BackColor = Color.Black; // btnShowYe1.ForeColor = Color.White; //} //else if (!btnShowYe2.Enabled) //{ // btnShowYe2.BackColor = Color.Black; // btnShowYe2.ForeColor = Color.White; //} //else //{ // btnShowYe3.BackColor = Color.Black; // btnShowYe3.ForeColor = Color.White; //} } #endregion #region 跳轉到指定頁數 /// <summary> /// 跳轉到第一頁 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnShowYe1_Click(object sender, EventArgs e) { currentPage = Convert.ToInt32(((Button)sender).Text); FenYe(currentPage); //判斷不是第一頁和最後一頁 if (currentPage != 1 && currentPage != getTotalPage()) { if (!((Button)sender).Equals(btnShowYe2)) { SheZhiBtn(currentPage - 1, currentPage, currentPage + 1); } else { SheZhiBtn(true, false, true); } } else if (currentPage == 1) { SheZhiBtn(false, true, true); } else { SheZhiBtn(true, true, false); } } #endregion #region 跳轉到尾頁 /// <summary> /// 跳轉到尾頁 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnEnd_Click(object sender, EventArgs e) { SheZhiBtn((getTotalPage() - 2), (getTotalPage() - 1), getTotalPage()); SheZhiBtn(true, true, false); currentPage = getTotalPage(); FenYe(currentPage); } #endregion #region 查詢當前最大的頁碼是多少 /// <summary> /// 查詢當前最大的頁碼是多少 /// </summary> /// <returns>返回最大的頁碼</returns> public int getTotalPage() { string sql = "select count(*) from Administrator_Log"; int count = DBhelp.countList(sql); //判斷總數據除以每頁顯示的條數的餘數是否爲0 if (count % pageSize == 0) { //如果爲0，用總數據除以每頁顯示的條數，返回回去 return count / pageSize; } else { //如果不爲0，用總數除以每頁顯示的條數再+1 return count / pageSize + 1; } } #endregion #region 點擊確定按鈕跳轉到指定頁面 /// <summary> /// 點擊確定按鈕跳轉到指定頁面 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnQueding_Click(object sender, EventArgs e) { if (!txtPage.Text.Trim().Equals(string.Empty)) { int page = Convert.ToInt32(txtPage.Text.Trim()); if (page > 1 && page < getTotalPage()) { currentPage = page; SheZhiBtn(currentPage - 1, currentPage, currentPage + 1); SheZhiBtn(true, false, true); FenYe(currentPage); } else if (page <= 1) { SheZhiBtn(1, 2, 3); SheZhiBtn(false, true, true); currentPage = 1; FenYe(currentPage); } else { SheZhiBtn((getTotalPage() - 2), (getTotalPage() - 1), getTotalPage()); SheZhiBtn(true, true, false); currentPage = getTotalPage(); FenYe(currentPage); } } else { MessageBox.Show("請輸入指定的頁數"); } txtPage.Text = string.Empty; } #endregion #region 輸入跳轉指定頁面文本框的限制 /// <summary> /// 輸入跳轉指定頁面文本框的限制 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void txtPage_KeyPress(object sender, KeyPressEventArgs e) { if (!Char.IsDigit(e.KeyChar) && e.KeyChar != 8) { e.Handled = true; } } #endregion
