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ASP.NET DetailsView shows the information analysis of the selected products. I believe that many inexperienced people are at a loss about this. Therefore, this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

After completing the ProductsGrid GridView, all that is left is to add a DetailsView that displays the details of the selected product. Add a DetailsView control above the GridView and create a new data source named ProductDetailsDataSource. Exe. Since we want this DetailsView to display the details of the selected product, configure ProductDetailsDataSource to use the GetProductByProductID (productID) method of the ProductsBLL class.

ASP.NET DetailsView: call the GetProductByProductID (productID) method of the ProductsBLL class

Let productID get the parameter value from the SelectedValue property of the GridView control. As we discussed earlier, the SelectedValue property of GridView returns * data key values of the selected row. Therefore, the DataKeyNames property of GridView must be set to ProductID so that the ProductID of the selected row can be returned through the SelectedValue property.

ASP.NET DetailsView: associate the productID parameter to the SelectedValue property of GridView.

After configuring productDetailsDataSource ObjectDataSource and binding it to DetailsView, this tutorial is complete! no row was selected during the * visits, so the SelectedValue property of GridView returns null. Since there is no product with Productid value Null, the GetProductByProductID (productID) method does not return any records and the DetailsView cannot be displayed (figure 11). Clicking the select button of GridView will cause a postback and update DetailsView. Exe. The SelectedValue property of GridView returns the ProductID of the selected row, the GetProductByProductID (productID) method returns product-specific information ProductsDataTable, and DetailsView displays these details (figure 12).

ASP.NET DetailsView: * only GridView is displayed on each visit

ASP.NET DetailsView: displays product details after selecting a row

After reading the above, have you mastered the method of displaying the information analysis of the selected product in ASP.NET DetailsView? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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