关于datagrid的使用以及动态修改，以及使用存储过程的介绍
点击次数：14 次 发布日期：2008-11-27 01:11:46 作者：源代码网
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由于vs.net是Codebehind的， 而quickstart 上的例子是代码与页面混合的，所以许多朋友有些疑惑。特别是有关template中如何触发事件的问题。 是这样，许多server control都有一个commandname属性 就是在.aspx中设置你那个edit的commandname，在.cs中用e.CommandName 得到 如 ///aspx页面 <asp:DataList id=usersList runat="server" > <template name="ItemTemplate"> <asp:ImageButton id=ImageButton1 runat="server" ImageUrl="../images/edit.gif" AlternateText="编辑条目" CommandName="edit"></asp:ImageButton> <asp:ImageButton id=ImageButton2 runat="server" ImageUrl="../images/delete.gif" AlternateText="删除条目" CommandName="delete"></asp:ImageButton> <asp:Label id=lblRole runat="server" Text="<%# Container.DataItem%>" CssClass="Normal"></asp:Label> </template> <template name="EditItemTemplate"> <span class="Normal">email (cookie auth) or DOMAINusername (Windows auth)</span><br /> <asp:Textbox id=userName width="200" cssclass="NormalTextBox" Text="<%# Container.DataItem %>" runat="server" /> <asp:LinkButton Text="Apply" CommandName="apply" cssclass="CommandButton" runat="server" ID=ApplyButton/> </template> </asp:DataList> ///cs文件 protected void UsersList_ItemCommand (Object sender, DataListCommandEventArgs e) { if (e.CommandName == "edit") { // Set editable list item index if "edit" button clicked next to the item usersList.EditItemIndex = e.Item.ItemIndex; // Repopulate the datalist control BindData(); } else if (e.CommandName == "apply") { // Obtain the current portal settings PortalConfigurationData portalConfig = PortalConfiguration.LoadSettings(PortalConfiguration.ConfigFilePath); // Update user entry portalConfig.SecurityRoles[roleIndex].Users[e.Item.ItemIndex] = ((TextBox) e.Item.FindControl("userName")).Text; // Persist Settings back to disk PortalConfiguration.PersistSettings(portalConfig); // Disable editable list item access usersList.EditItemIndex = -1; // Repopulate the datalist control BindData(); } else if (e.CommandName == "delete") { // Obtain the current portal settings PortalConfigurationData portalConfig = PortalConfiguration.LoadSettings(PortalConfiguration.ConfigFilePath); // Delete selected User String[] users = new String[portalConfig.SecurityRoles][roleIndex].Users.Length-1]; for (int i=0, j=0; i < portalConfig.SecurityRoles[roleIndex].Users.Length; i++) { if (i != e.Item.ItemIndex) { users[j] = portalConfig.SecurityRoles[roleIndex].Users[i]; j++; } } // Update Users portalConfig.SecurityRoles[roleIndex].Users = users; // Persist Settings back to disk PortalConfiguration.PersistSettings(portalConfig); // Ensure that item is not editable usersList.EditItemIndex = -1; // Repopulate list BindData(); } } 2.关于在asp.net中调用存储过程 例子如下： SQLConnection myConnection = new SQLConnection(PortalConfiguration.Settings.DatabaseConnectionString); SQLCommand myCommand = new SQLCommand("AddMessage", myConnection); // Mark the Command as a SPROC myCommand.CommandType = CommandType.StoredProcedure; // Add Parameters to SPROC SQLParameter parameterItemID = new SQLParameter("@ItemID", SQLDataType.Int, 4); parameterItemID.Direction = ParameterDirection.Output; myCommand.Parameters.Add(parameterItemID); SQLParameter parameterTitle = new SQLParameter("@Title", SQLDataType.NVarChar, 100); parameterTitle.Value = title; myCommand.Parameters.Add(parameterTitle); SQLParameter parameterBody = new SQLParameter("@Body", SQLDataType.NVarChar, 3000); parameterBody.Value = body; myCommand.Parameters.Add(parameterBody); SQLParameter parameterParentID = new SQLParameter("@ParentID", SQLDataType.Int, 4); parameterParentID.Value = parentId; myCommand.Parameters.Add(parameterParentID); SQLParameter parameterUserName = new SQLParameter("@UserName", SQLDataType.NVarChar, 100); parameterUserName.Value = userName; myCommand.Parameters.Add(parameterUserName); SQLParameter parameterPortalID = new SQLParameter("@PortalID", SQLDataType.Int, 4); parameterPortalID.Value = portalId; myCommand.Parameters.Add(parameterPortalID); SQLParameter parameterModuleID = new SQLParameter("@ModuleID", SQLDataType.Int, 4); parameterModuleID.Value = moduleId; myCommand.Parameters.Add(parameter  源代码网供稿. |
