Showing Tag: "net" (Show all posts)

RazorTagHelper - DOTNET_HOST_PATH is not set -Error MSB4018

Posted by jineesh uvantavida on Wednesday, December 2, 2020, In : asp.net 

After updating VS 2019 16.8.2 There will be an error on compilation on any project:


dot net --version : 5.0.100

Severity Code Description Project File Line Suppression State

Error MSB4018 The "RazorGenerate" task failed unexpectedly.
System.InvalidOperationException: DOTNET_HOST_PATH is not set at Microsoft.AspNetCore.Razor.Tasks.DotNetToolTask.get_DotNetPath()
at Microsoft.AspNetCore.Razor.Tasks.DotNetToolTask.GenerateFullPathToTool()
at Microsoft.Build.Utilities.ToolTask.ComputePathToTool() a...


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Can't access master page properties from content pages

Posted by jineesh uvantavida on Tuesday, October 24, 2017,
You can add the add this on your Content  page 

<%@ MasterType VirtualPath="~/Main.master"%>

and then simply use Master.YourPropertyName in code file or this.Master.YourPropertyName


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How to only allow numbers in TextBox control in asp.net

Posted by jineesh uvantavida on Saturday, October 14, 2017, In : Tips & Ideas. 
You can simply use regular expression validator as

    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <asp:RegularExpressionValidator ID="RegularExpressionValidator1"
        ControlToValidate="TextBox1" runat="server"
        ErrorMessage="Only Numbers allowed"
        ValidationExpression="\d+">

    </asp:RegularExpressionValidator>

Also you can use the below regular expression to make the text-field as 12 digit number to be added.(madatory)

    ^[0-9]{12}$

Also you can make the field ...

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