Adding Template Field in a cell of a Gridview. I'm not entirely certain what you're asking, but if your goal is to display fields in a TemplateField in a GridView where the GridView is bound to an anonymous type. Adding and Responding to Buttons to a Grid. View (C#)In this tutorial we'll look at how to add custom buttons, both to a template and to the fields of a Grid. View or Details. View control. In particular, we'll build an interface that has a Form. View that allows the user to page through the suppliers. The process of adding a GridView control. How to add a TemplateField to a GridView. GridView gdDynamicGrid = new GridView(); TemplateField. This article describes about how to create template columns dynamically in a grid view. TemplateField bfield = new. Using TemplateFields in the GridView Control. Start by adding a new TemplateField to the GridView by clicking on the Edit Columns link in the GridView's smart. To add template field to gridview at runtime I am using a gridview &. Steps to create the <TemplateField> element in the GridView control a. Experts Exchange > Questions > Programmatically add a Template Field to a GridView. Introduction. While many reporting scenarios involve read- only access to the report data, it's not uncommon for reports to include the ability to perform actions based upon the data displayed. Typically this involved adding a Button, Link. Button, or Image. Button Web control with each record displayed in the report that, when clicked, causes a postback and invokes some server- side code. Editing and deleting the data on a record- by- record basis is the most common example. In fact, as we saw starting with the Overview of Inserting, Updating, and Deleting Data tutorial, editing and deleting is so common that the Grid. View, Details. View, and Form. View controls can support such functionality without the need for writing a single line of code. In addition to Edit and Delete buttons, the Grid. View, Details. View, and Form. View controls can also include Buttons, Link. Buttons, or Image. Buttons that, when clicked, perform some custom server- side logic. In this tutorial we ll look at how to add custom buttons, both to a template and to the fields of a Grid. View or Details. View control. In particular, we ll build an interface that has a Form. View that allows the user to page through the suppliers. For a given supplier, the Form. View will show information about the supplier along with a Button Web control that, if clicked, will mark all of their associated products as discontinued. Additionally, a Grid. View lists those products provided by the selected supplier, with each row containing Increase Price and Discount Price Buttons that, if clicked, raise or reduce the product's Unit. Price by 1. 0% (see Figure 1). Step 1: Adding the Button Tutorial Web Pages. Before we look at how to add a custom buttons, let's first take a moment to create the ASP. NET pages in our website project that we ll need for this tutorial. Start by adding a new folder named Custom. Buttons. Next, add the following two ASP. NET pages to that folder, making sure to associate each page with the Site. Default. aspx. Custom. Buttons. aspx. Figure 2: Add the ASP. NET Pages for the Custom Buttons- Related Tutorials. Like in the other folders, Default. Custom. Buttons folder will list the tutorials in its section. Recall that the Section. Level. Tutorial. Listing. User Control provides this functionality. Therefore, add this User Control to Default. Solution Explorer onto the page's Design view. Lastly, add the pages as entries to the Web. Specifically, add the following markup after the Paging and Sorting < site. Map. Node> :< site. Map. Node. title=. The menu on the left now includes items for the editing, inserting, and deleting tutorials. Figure 4: The Site Map Now Includes the Entry for the Custom Buttons Tutorial. Step 2: Adding a Form. View that Lists the Suppliers. Let's get started with this tutorial by adding the Form. View that lists the suppliers. As discussed in the Introduction, this Form. View will allow the user to page through the suppliers, showing the products provided by the supplier in a Grid. View. Additionally, this Form. View will include a Button that, when clicked, will mark all of the supplier's products as discontinued. Before we concern ourselves with adding the custom button to the Form. View, let's first just create the Form. View so that it displays the supplier information. Start by opening the Custom. Buttons. aspx page in the Custom. Buttons folder. Add a Form. View to the page by dragging it from the Toolbox onto the Designer and set its ID property to Suppliers. From the Form. View's smart tag, opt to create a new Object. Data. Source named Suppliers. Data. Source. Configure this new Object. Data. Source such that it queries from the Suppliers. BLL class's Get. Suppliers() method (see Figure 6). Since this Form. View does not provide an interface for updating the supplier information, select the (None) option from the drop- down list in the UPDATE tab. After configuring the Object. Data. Source, Visual Studio will generate an Insert. Item. Template, Edit. Item. Template, and Item. Template for the Form. View. Remove the Insert. Item. Template and Edit. Item. Template and modify the Item. Template so that it displays just the supplier's company name and phone number. Finally, turn on paging support for the Form. View by checking the Enable Paging checkbox from its smart tag (or by setting its Allow. Paging property to True). After these changes your page's declarative markup should look similar to the following: < asp: Form. View ID=. To accomplish this, add a Grid. View to the page, set its ID property to Suppliers. Products, and add a new Object. Data. Source named Suppliers. Products. Data. Source. Configure this Object. Data. Source to use the Products. BLL class's Get. Products. By. Supplier. ID(supplier. ID) method (see Figure 9). While this Grid. View will allow for a product's price to be adjusted, it won't be using the built- in editing or deleting features from the Grid. View. Therefore, we can set the drop- down list to (None) for the Object. Data. Source's UPDATE, INSERT, and DELETE tabs. Since the Get. Products. By. Supplier. ID(supplier. ID) method accepts an input parameter, the Object. Data. Source wizard prompts us for the source of this parameter value. To pass in the Supplier. ID value from the Form. View, set the Parameter source drop- down list to Control and the Control. ID drop- down list to Suppliers (the ID of the Form. View created in Step 2). After completing the Object. Data. Source wizard, the Grid. View will contain a Bound. Field or Check. Box. Field for each of the product's data fields. Let's trim this down to show just the Product. Name and Unit. Price Bound. Fields along with the Discontinued Check. Box. Field; furthermore, let's format the Unit. Price Bound. Field such that its text is formatted as a currency. Your Grid. View and Suppliers. Products. Data. Source Object. Data. Source's declarative markup should look similar to the following markup: < asp: Grid. View ID=. Figure 1. Tokyo Traders supplier from the Form. View. Step 4: Creating DAL and BLL Methods to Discontinue All Products for a Supplier. Before we can add a Button to the Form. View that, when clicked, discontinues all of the supplier's products, we first need to add a method to both the DAL and BLL that performs this action. In particular, this method will be named Discontinue. All. Products. For. Supplier(supplier. ID). When the Form. View's Button is clicked, we ll invoke this method in the Business Logic Layer, passing in the selected supplier's Supplier. ID; the BLL will then call down to the corresponding Data Access Layer method, which will issue an UPDATE statement to the database that discontinues the specified supplier's products. As we have done in our previous tutorials, we ll use a bottom- up approach, starting with creating the DAL method, then the BLL method, and finally implementing the functionality in the ASP. NET page. Open the Northwind. Typed Data. Set in the App. Doing so will bring up the Table. Adapter Query Configuration wizard, which walks us through the process of adding the new method. Start by indicating that our DAL method will use an ad- hoc SQL statement. Next, the wizard prompts us as to what type of query to create. Since the Discontinue. All. Products. For. Supplier(supplier. ID) method will need to update the Products database table, setting the Discontinued field to 1 for all products provided by the specified supplier. ID, we need to create a query that updates data. The next wizard screen provides the Table. Adapter's existing UPDATE statement, which updates each of the fields defined in the Products Data. Table. Replace this query text with the following statement: UPDATE . Complete the wizard by clicking the Finish button. Upon returning to the Data. Set Designer you should see a new method in the Products. Table. Adapter named Discontinue. All. Products. For. Supplier(@Supplier. ID). With the Discontinue. All. Products. For. Supplier(supplier. ID) method created in the Data Access Layer, our next task is to create the Discontinue. All. Products. For. Supplier(supplier. ID) method in the Business Logic Layer. To accomplish this, open the Products. BLL class file and add the following: public int Discontinue. All. Products. For. Supplier(int supplier. ID). . If there were any business rules that only allowed a supplier's products to be discontinued under certain circumstances, those rules should be implemented here, in the BLL. Note: Unlike the Update. Product overloads in the Products. BLL class, the Discontinue. All. Products. For. Supplier(supplier. ID) method signature does not include the Data. Object. Method. Attribute attribute (< System. Component. Model. Data. Object. Method. Attribute(System. Component. Model. Data. Object. Method. Type. Update, Boolean)> ). This precludes the Discontinue. All. Products. For. Supplier(supplier. ID) method from the Object. Data. Source's Configure Data Source wizard's drop- down list in the UPDATE tab. I ve omitted this attribute because we ll be calling the Discontinue. All. Products. For. Supplier(supplier. ID) method directly from an event handler in our ASP. NET page. Step 5: Adding a Discontinue All Products Button to the Form. View. With the Discontinue. All. Products. For. Supplier(supplier. ID) method in the BLL and DAL complete, the final step for adding the ability to discontinue all products for the selected supplier is to add a Button Web control to the Form. View's Item. Template. Let's add such a Button below the supplier's phone number with the button text, Discontinue All Products and an ID property value of Discontinue. All. Products. For. Supplier. You can add this Button Web control through the Designer by clicking on the Edit Templates link in the Form.
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