Category: Technical

CheckBox Validation

Bryan Xu

ASP.NET provides all the wonderful validation controls and perform both client-side and server-side validation. However, to validate a CheckBox, only the Custom Validation Control can be used. Assume you have the following… <span><asp:CheckBox ID=”MyCheckBox” runat=”server” onClick=”if (this.checked) CheckBoxChecked(); else CheckBoxUnchecked();” />Yes, your website is awesome! =) </span> <asp:CustomValidator ID=”MyCheckBoxValidator” runat=”server” ErrorMessage=”Custom Validator” ClientValidationFunction=”ClientValidateMyCheckBox” ValidationGroup=”MyValidationGroup” OnServerValidate=”MyCheckBoxValidator_ServerValidate”>Required.</asp:CustomValidator> … Continued

CSS Friendly Adapters and Skins

Bryan Xu

ASP.NET CSS Friendly Control Adapters http://www.asp.net/CSSAdapters/ http://www.codeplex.com/cssfriendly I guess this exists because Microsoft realizes that some of its rendered HTML code are not that easy to apply CSS to. So this adapter comes and stands in the way of the rendering process to generate different sets of HTML. It’s pretty cool because at the very … Continued

Random Password Generation

Bryan Xu

Pretty cool, can be used for many purposes, like generating the decryption and validation machine keys, etc… https://www.grc.com/passwords.htm By Bryan Xu

Select a row on GridView

Bryan Xu

There are many ways to select a row and perform whatever actions you desire in GridView. The easiest is to let its CommandField generate the select button and use the SelectedIndexChanging and SelectedIndexChanged events for the actions desired. <asp:CommandField ShowSelectButton=”true” /> However, it would be more elegant if you can just select the row. 3 … Continued

Server.HttpEncode vs. HttpUtility.HttpEncode

Bryan Xu

Just use HttpUtility.Encode because Server.HttpEncode simply calls HttpUtility.Encode. Basically if you are trying to display text back to the user and these text are either straight from database, or from databound objects, or from current page textbox entered by user, etc, use HttpUtility.Encode, mainly to prevent script-injection and handle specials characters such as blanks and … Continued