sqldatasource

问题 this problem is driving me really mad. In an Asp.Net-application, I have two DropDownLists, DropDownStore and DropDownCampaign. <asp:DropDownList ID="storeDropDown" AppendDataBoundItems="true" AutoPostBack="true" DataSourceID="storeSqlDataSource" DataTextField="Name" DataValueField="StoreId" runat="server" OnSelectedIndexChanged="storeDropDown_SelectedIndexChanged"> <asp:ListItem Value="">Choose a store</asp:ListItem> </asp:DropDownList> <asp:DropDownList ID="campaignDropDown" DataSourceID=

问题 I have the following development environment for ASP.Net WebPage VS 2015 Professional Version, using .Net Framework 4.0 MySQL Server 5.6, MySQL .Net Connector 6.9.5 MySQL for Visual Studio 2.0.2 I am able to connect to the MySQL database server from Visual Studio Server Explorer. I am trying to create a SQL DataSource for MySQL Database. When I go through the configure data source wizard, it works fine by populating the tables and columns for each table in "Configure Select Statement form",

问题 I have the following development environment for ASP.Net WebPage VS 2015 Professional Version, using .Net Framework 4.0 MySQL Server 5.6, MySQL .Net Connector 6.9.5 MySQL for Visual Studio 2.0.2 I am able to connect to the MySQL database server from Visual Studio Server Explorer. I am trying to create a SQL DataSource for MySQL Database. When I go through the configure data source wizard, it works fine by populating the tables and columns for each table in "Configure Select Statement form",

问题 I have a gridview that has databound items. it is bound to a SQLDATASOURCE. The default Edit, Update works fine, however, i wanted to perform a query too when user updates the row. Here is my aspx <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Customer_id" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display." AllowPaging="True" AllowSorting="True" CellPadding="4" ForeColor="#333333" GridLines="Horizontal" PageSize="5" Width=

问题 Though this seems to be discussed before, I can't apply given help in my case: I have 2 DropDownLists (DDL1, DDL2) inside the Edit Template of a Gridview, which is bound to a SQLDataSource. DDL2 depends on the selected value of DDL1. If I place the SQLDataSources that populate the DropDownLists on the top level, the ControlID of DDL2's ControlParameter isn't found even though I address it correctly (Gridview$DDL1ControlID). Therefore I placed the SQLDataSources inside the Edit Template of the

问题 I have two queries that I want to be able to run on a page. I have a button, gridview and sqldatasource at the top of the page and another button, gridview and sqldatasource with the second query at the bottom. How do I associate the buttons with their particular grid and datasource. right now when I click either button, both gridview1 and gridview2 populate. 回答1: I'm assuming in the markup for your grdiviews you have set the datasource property to one of the sql data sources. I'm also going

问题 i am getting a syntax error at drr(5) which 5 is the column i want to base the color change on. this method works when i am using a dataset Dim Land As String = "Land" Dim Air As String = "Air" Dim Cruise As String = "Cruise" Dim y As String For Each drr As gridviewrow In GridView2.Rows y = drr(5).ToString() If y = Land Then e.Row.ForeColor = System.Drawing.Color.LightGreen ElseIf y = Air Then e.Row.ForeColor = System.Drawing.Color.Red ElseIf y = Cruise Then e.Row.ForeColor = System.Drawing

问题 I am getting this exception and can not figure out why: Cannot insert the value NULL into column 'UserId' This is my code: <asp:TextBox ID="FirstNameBox" runat="server" /> <br /> <br /> <asp:TextBox ID="LastNameBox" runat="server" /> <asp:SqlDataSource ID="InsertText" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" InsertCommand="INSERT INTO UserForm (UserId,FirstName,LastName) VALUES (@UserId,@FiName,@LaName)"> <InsertParameters> <asp:ControlParameter Name=

问题 I am getting this exception and can not figure out why: Cannot insert the value NULL into column 'UserId' This is my code: <asp:TextBox ID="FirstNameBox" runat="server" /> <br /> <br /> <asp:TextBox ID="LastNameBox" runat="server" /> <asp:SqlDataSource ID="InsertText" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" InsertCommand="INSERT INTO UserForm (UserId,FirstName,LastName) VALUES (@UserId,@FiName,@LaName)"> <InsertParameters> <asp:ControlParameter Name=

问题 Say I have some sort of datagrid or repeater on a .aspx page, and my data source is defined inline like: <asp:SqlDataSource ID="ds1" runat="server" ConnectionString="..." SelectCommand="some_proc" ...> <SelectParameters> <asp:ControlParameter ControlID="ddlYear" Name="Year" .. /> </SelectParameters> </asp:SqlDataSource> How can I debug my code so I can see exactly what the value of Year is when it binds to the grid? 回答1: You can hook into the SqlDataSource events: protected void