VB.NET TextBox Validation Control

<VisualStudioProject>
    <VisualBasic
        ProjectType = "Local"
        ProductVersion = "7.10.3077"
        SchemaVersion = "2.0"
        ProjectGuid = "{E921E8BC-9AE2-4FEB-808B-0D4B0C1319E1}"
    >
        <Build>
            <Settings
                ApplicationIcon = ""
                AssemblyKeyContainerName = ""
                AssemblyName = "TextBoxValidateHost"
                AssemblyOriginatorKeyFile = ""
                AssemblyOriginatorKeyMode = "None"
                DefaultClientScript = "JScript"
                DefaultHTMLPageLayout = "Grid"
                DefaultTargetSchema = "IE50"
                DelaySign = "false"
                OutputType = "WinExe"
                OptionCompare = "Binary"
                OptionExplicit = "On"
                OptionStrict = "Off"
                RootNamespace = "TextBoxValidateHost"
                StartupObject = "TextBoxValidateHost.Form1"
            >
                <Config
                    Name = "Debug"
                    BaseAddress = "285212672"
                    ConfigurationOverrideFile = ""
                    DefineConstants = ""
                    DefineDebug = "true"
                    DefineTrace = "true"
                    DebugSymbols = "true"
                    IncrementalBuild = "true"
                    Optimize = "false"
                    OutputPath = "bin\"
                    RegisterForComInterop = "false"
                    RemoveIntegerChecks = "false"
                    TreatWarningsAsErrors = "false"
                    WarningLevel = "1"
                />
                <Config
                    Name = "Release"
                    BaseAddress = "285212672"
                    ConfigurationOverrideFile = ""
                    DefineConstants = ""
                    DefineDebug = "false"
                    DefineTrace = "true"
                    DebugSymbols = "false"
                    IncrementalBuild = "false"
                    Optimize = "true"
                    OutputPath = "bin\"
                    RegisterForComInterop = "false"
                    RemoveIntegerChecks = "false"
                    TreatWarningsAsErrors = "false"
                    WarningLevel = "1"
                />
            </Settings>
            <References>
                <Reference
                    Name = "System"
                    AssemblyName = "System"
                />
                <Reference
                    Name = "System.Data"
                    AssemblyName = "System.Data"
                />
                <Reference
                    Name = "System.Drawing"
                    AssemblyName = "System.Drawing"
                />
                <Reference
                    Name = "System.Windows.Forms"
                    AssemblyName = "System.Windows.Forms"
                />
                <Reference
                    Name = "System.XML"
                    AssemblyName = "System.Xml"
                />
                <Reference
                    Name = "TextBoxValidate"
                    Project = "{7C6795ED-8440-4434-A7A4-4EA061E2A958}"
                    Package = "{F184B08F-C81C-45F6-A57F-5ABD9991F28F}"
                />
                <Reference
                    Name = "Microsoft.VisualBasic"
                    AssemblyName = "Microsoft.VisualBasic"
                    HintPath = "..\..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Microsoft.VisualBasic.dll"
                />
                <Reference
                    Name = "System.Design"
                    AssemblyName = "System.Design"
                    HintPath = "..\..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.Design.dll"
                />
            </References>
            <Imports>
                <Import Namespace = "Microsoft.VisualBasic" />
                <Import Namespace = "System" />
                <Import Namespace = "System.Collections" />
                <Import Namespace = "System.Data" />
                <Import Namespace = "System.Drawing" />
                <Import Namespace = "System.Diagnostics" />
                <Import Namespace = "System.Windows.Forms" />
            </Imports>
        </Build>
        <Files>
            <Include>
                <File
                    RelPath = "AssemblyInfo.vb"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
                <File
                    RelPath = "Form1.vb"
                    SubType = "Form"
                    BuildAction = "Compile"
                />
                <File
                    RelPath = "Form1.resx"
                    DependentUpon = "Form1.vb"
                    BuildAction = "EmbeddedResource"
                />
            </Include>
        </Files>
    </VisualBasic>
</VisualStudioProject>