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Jul 29, 2016 · Let's Show #217 - C# Visual Studio .NET Tutorial - iText# PDF Create Watermark #1. Event ...Duration: 2:31 Posted: Jul 29, 2016 The goal of the ASP.NET validation controls is to create a straightforward, reusable validation framework that allows you to set validation rules declaratively. In other words, you drag a validator onto a form, connect it to an existing control, and set a few properties to determine how the validation will be performed. All of these steps unfold at design time. Best of all, you don t need to write any validation code at all. Clearly, validation controls allow you to be more productive. Validation controls also simplify your application because they encapsulate common validation tasks like checking for blank values, comparing numbers, and using regular expressions. Because the validation controls handle this basic infrastructure, you don t need to write (and repeat) this code yourself. Considering that validation code is usually scattered throughout countless different forms, you can see how validation controls can help you dramatically cut down the total amount of code in your application. ASP.NET provides five core validators, which are shown in Table 18-6. add image watermark to pdf c# Add Water mark image to PDF using iTextsharp , C# and VB.Net in ASP ...
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11 May 2008 ... Using iTextSharp To Watermark /Write Text To Existing PDF's . May 11 ... 17 /// < param name="sourceFile">The PDf File </param> 18 /// <param ... 4. Add the corresponding business tier methods to the Catalog class in App_Code/CatalogAccess.cs: // Gets the reviews for a specific product public static DataTable GetProductReviews(string productId) { // get a configured DbCommand object DbCommand comm = GenericDataAccess.CreateCommand(); // set the stored procedure name comm.CommandText = "CatalogGetProductReviews"; // create a new parameter DbParameter param = comm.CreateParameter(); param.ParameterName = "@ProductID"; param.Value = productId; param.DbType = DbType.Int32; comm.Parameters.Add(param); // execute the stored procedure return GenericDataAccess.ExecuteSelectCommand(comm); } // Add a new shopping cart item public static bool AddReview(string customerId, string productId, string review) { // get a configured DbCommand object DbCommand comm = GenericDataAccess.CreateCommand(); // set the stored procedure name comm.CommandText = "CatalogAddProductReview "; // create a new parameter DbParameter param = comm.CreateParameter(); param.ParameterName = "@CustomerID"; param.Value = customerId; param.DbType = DbType.String; comm.Parameters.Add(param); // create a new parameter param = comm.CreateParameter(); param.ParameterName = "@ProductID"; param.Value = productId; param.DbType = DbType.Int32; comm.Parameters.Add(param); // create a new parameter param = comm.CreateParameter(); param.ParameterName = "@Review"; param.Value = review; param.DbType = DbType.String; comm.Parameters.Add(param); // returns true in case of success or false in case of an error try { add watermark to pdf c# Add Text Watermark and Image Watermark to PDF in C# .NET ...
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