【C#】DataGridView的常用用法

//读取表Supplier并绑定到GridView中 private void BindGvSupplier() ...{ OracleConnection conn = this.Conn(); OracleCommand cmd = new OracleCommand( "select * from Supplier ", conn); OracleDataAdapter sda = new OracleDataAdapter(cmd); DataSet ds = new DataSet(); sda.Fill(ds, "Supplier "); string[] SuppId = new string[ds.Tables[ "Supplier "].Rows.Count]; for (int i = 0; i < ds.Tables[ "Supplier "].Rows.Count; i++) ...{ SuppId[i] = ds.Tables[ "Supplier "].Rows[i][0].ToString(); } this.gvSupplier.DataSource = ds.Tables[ "Supplier "]; this.gvSupplier.DataKeyNames[0] = "SuppId "; this.gvSupplier.DataBind(); this.lblPageIndex.Text = Convert.ToString(int.Parse(this.gvSupplier.PageIndex.ToString()) + 1); this.lblTotalPage.Text = this.gvSupplier.PageCount.ToString(); this.lblCount.Text = this.GetTotalCount().ToString(); } //分页触发的事件 protected void gvSupplier_PageIndexChanging(object sender, GridViewPageEventArgs e) ...{ this.gvSupplier.PageIndex = e.NewPageIndex; this.BindGvSupplier(); this.lblPageIndex.Text = Convert.ToString(int.Parse(this.gvSupplier.PageIndex.ToString()) + 1); this.cbAllSelect_CheckedChanged(this.cbAllSelect, e); } //删除按钮触发的事件 protected void gvSupplier_RowDeleting(object sender, GridViewDeleteEventArgs e) ...{ int id = e.RowIndex; GridViewRow gvr = this.gvSupplier.Rows[id]; int SuppId=int.Parse(((HyperLink)(gvr.Cells[7].Controls[0])).Text.ToString()); string sqlString = "delete from Supplier where SuppId= " + SuppId; //如果本页只有一条数据，删除后要向前翻一页 if (this.gvSupplier.Rows.Count == 1) ...{ if (this.gvSupplier.PageIndex > 1) ...{ this.gvSupplier.PageIndex--; } } int result = ExecuteSql(sqlString); if (result == 1) ...{ this.Alert( "你成功删除一条数据 ", this.Page); } this.BindGvSupplier(); this.BindGvSupplier(); } //绑定删除按钮的确认提示 protected void gvSupplier_RowDataBound(object sender, GridViewRowEventArgs e) ...{ if (e.Row.RowType == DataControlRowType.DataRow) ...{ LinkButton myLb = (LinkButton)(e.Row.Cells[8].Controls[1]); myLb.Attributes.Add( "onclick ", "javascript:return confirm( '你确认删除 "+e.Row.Cells[0].Text+ "吗? ') "); //鼠标经过时改变行的颜色 e.Row.Attributes.Add( "onmouseover ", "this.style.backgroundColor= '#ffffe7 ' "); e.Row.Attributes.Add( "onmouseout ", "this.style.backgroundColor= 'transparent ' "); } } //执行一条Oracle语句 private int ExecuteSql(String sqlString) ...{ //try //{ OracleConnection conn = this.Conn(); conn.Open(); OracleCommand cmd = new OracleCommand(sqlString, conn); int effectedLine = cmd.ExecuteNonQuery(); conn.Close(); return effectedLine; //} //catch //{ // return 0; //} } //点击编辑按钮时触发的事件 protected void gvSupplier_RowEditing(object sender, GridViewEditEventArgs e) ...{ string s = this.gvSupplier.DataKeys[e.NewEditIndex][1].ToString(); this.txtAddr1.Text = "dddd " + s; this.gvSupplier.EditIndex = e.NewEditIndex; this.BindGvSupplier(); } //点击取消按钮时触发的事件 protected void gvSupplier_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) ...{ this.gvSupplier.EditIndex = -1; this.BindGvSupplier(); } //点击更新按钮时触发的事件 protected void gvSupplier_RowUpdating(object sender, GridViewUpdateEventArgs e) ...{ int id = e.RowIndex; GridViewRow gvr = this.gvSupplier.Rows[id]; int suppId = int.Parse(((HyperLink)(gvr.Cells[7].Controls[0])).Text.ToString()); string name = ((TextBox)gvr.Cells[0].Controls[0]).Text.ToString(); string status = ((TextBox)gvr.Cells[1].Controls[0]).Text.ToString(); string addr1 = ((TextBox)gvr.Cells[2].Controls[0]).Text.ToString(); string addr2 =((TextBox) gvr.Cells[3].Controls[0]).Text.ToString(); string city = ((TextBox)gvr.Cells[4].Controls[0]).Text.ToString(); string state = ((TextBox)gvr.Cells[5].Controls[0]).Text.ToString(); string zip=((TextBox)gvr.Cells[6].Controls[0]).Text.ToString(); string sqlString = "update Supplier set Name= ' " + name + " ',Status= ' " + status + " ',Addr1= ' " + addr1 + " ',Addr2= ' " + addr2 + " ',City= ' " + city + " ',State= ' " + state + " ',Zip= ' " + zip + " ' where SuppId= " + suppId; int result = ExecuteSql(sqlString); if (result == 1) ...{ //...... } this.gvSupplier.EditIndex = -1; this.BindGvSupplier(); } //增加一条记录 protected void btnAdd_Click(object sender, EventArgs e) ...{ string name = this.txtName.Text.ToString(); string status = this.txtStatus.Text.ToString(); string addr1 = this.txtAddr1.Text.ToString(); string addr2 = this.txtAddr2.Text.ToString(); string city = this.txtCity.Text.ToString(); string state = this.txtState.Text.ToString(); string zip = this.txtZip.Text.ToString(); string sqlString = "insert into Supplier values(SQSuppId.Nextval, ' " + name + " ', ' " + status + " ', ' " + addr1 + " ', ' " + addr2 + " ', ' " + city + " ', ' " + state + " ', ' " + zip + " ') "; if (this.ExecuteSql(sqlString) == 1) ...{ this.Alert( "你成功添加一条数据 ", this.Page); } else ...{ this.Alert( "添加未成功！ ", this.Page); } this.BindGvSupplier(); } //查看共有多少条数据 private int GetTotalCount() ...{ //try //{ OracleConnection conn = this.Conn(); conn.Open(); OracleCommand cmd = new OracleCommand( "select count(*) from Supplier ", conn); int count = Convert.ToInt32(cmd.ExecuteScalar()); conn.Close(); return count; //} //catch //{ // return 0; //} } //弹出警告窗口 public void Alert(string str_Message, Page page) ...{ page.RegisterStartupScript( " ", " <script >alert( ' " + str_Message + " '); </script > "); } //弹出确认对话框 public void Confirm(string str_Message, string btn, Page page) ...{ page.RegisterStartupScript( " ", " <script > if (confirm( ' " + str_Message + " ')==true){document.forms(0). " + btn + ".click();} </script > "); } protected void cbAllSelect_CheckedChanged(object sender, EventArgs e) ...{ for(int i=0;i <this.gvSupplier.Rows.Count;i++) ...{ CheckBox cbSelect=(CheckBox)(gvSupplier.Rows[i].Cells[10].FindControl( "cbSelect ")); cbSelect.Checked=this.cbAllSelect.Checked; } } //当点击删除按钮时删除所有checkbox被选中的数据 protected void btnDel_Click(object sender, EventArgs e) ...{ //如果用户确认将触发btnRealDel的事件 this.Confirm( "你真的要删除你所选的数据么？ ", "btnRealDel ", this.Page); } //真实的删除操作 public void btnRealDel_Click(object sender, EventArgs e) ...{ int count = 0; for (int i = 0; i < this.gvSupplier.Rows.Count; i++) ...{ CheckBox myCb = (CheckBox)(this.gvSupplier.Rows[i].Cells[10].FindControl( "cbSelect ")); if (myCb.Checked) ...{ count++; HyperLink hl = (HyperLink)(this.gvSupplier.Rows[i].Cells[7].Controls[0]); int suppId = int.Parse(hl.Text.ToString()); string sqlString = "delete from Supplier where SuppId= " + suppId; this.ExecuteSql(sqlString); } } if (count > 0) ...{ this.Alert( "你成功删除了 " + count + "条数据 ", this.Page); this.BindGvSupplier(); } }