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+---
+title: Time duration input for more than 24 hours
+description: How to create a time duration input component that accepts more than 24 hours?
+type: how-to
+page_title: Time duration input for more than 24 hours
+slug: common-kb-time-duration-input
+position: 
+tags: date, time, input, more than 24
+ticketid: 1540856
+res_type: kb
+---
+
+## Environment
+<table>
+	<tbody>
+		<tr>
+			<td>Product</td>
+			<td>DateTimePicker for Blazor</td>
+		</tr>
+	</tbody>
+</table>
+
+
+## Description
+
+I want to have an input which I can use to set a time duration of more than 24 hours. I tried DateTimePicker but could not exceed 24 hours.
+
+The use case would be to choose a start datetime and then the user inputs a time duration based on which the end datetime will be calculated. How can I achieve this?
+
+## Solution
+
+You can create a custom input for time duration using a [MaskedTextBox]({%slug maskedtextbox-overview%}). The used mask could be `00:00:00` and you can [include the literals in the value]({%slug maskedtextbox-mask-prompt%}#include-literals-in-the-value), so you can then split the MaskedTextBox value string by them and assign the separate hours, minutes, seconds values to corresponding variables.
+
+Then, use the `AddHours`, `AddMinutes`, `AddSeconds` methods of `DateTime` objects to add the hours, minutes, seconds values to the start datetime and thus calculate the end datetime.
+
+For a better UX, you can also add some custom validation to check whether the minutes and seconds value exceed 60.
+
+The sample below demonstrates the described approach.
+
+````CSHTML
+<style>
+	.k-state-invalid .k-textbox {
+		border-color: rgba(213,25,35,.5);
+	}
+</style>
+
+@if (Invalid)
+{
+	<div class="k-validation-summary k-messagebox k-messagebox-error" role="alert">
+		<ul>
+			<li>
+				<a style="text-decoration: none">@ErrorMessage</a>
+			</li>
+		</ul>
+	</div>
+}
+
+<div class="k-form">
+	<div class="k-form-field">
+		<label class="k-label k-form-label">Start Time:</label>
+		<TelerikDateTimePicker @bind-Value="@StartTime"
+							   Format="dd MMM yyyy HH:mm:ss"
+							   Width="250px">
+		</TelerikDateTimePicker>
+	</div>
+	<div class="k-form-field">
+		<TelerikMaskedTextBox Mask="00:00:00"
+							  Value="@DurationValue"
+							  ValueChanged="@ValueChangedHandler"
+							  IncludeLiterals="true"
+							  Class="@(Invalid? "k-state-invalid" : "")"
+							  Width="250px"
+							  Label="Duration:">
+		</TelerikMaskedTextBox>
+	</div>
+
+	<div class="k-form-field">
+		<TelerikButton OnClick="CalculateEnd" Enabled="@(!Invalid)">Calculate End</TelerikButton>
+	</div>
+
+	<div class="k-form-field">
+		<label class="k-label k-form-label">End Time:</label>
+		<TelerikDateTimePicker @bind-Value="@EndTime"
+							   Format="dd MMM yyyy HH:mm:ss"
+							   Width="250px">
+		</TelerikDateTimePicker>
+	</div>
+</div>
+
+@code {
+	string DurationValue { get; set; }
+
+	public DateTime StartTime { get; set; } = DateTime.Now;
+	public DateTime? EndTime { get; set; }
+
+	public double Hours { get; set; }
+	public double Minutes { get; set; }
+	public double Seconds { get; set; }
+
+	string ErrorMessage;
+	bool Invalid;
+
+	void ValueChangedHandler(string newVal)
+	{
+		DurationValue = newVal;
+
+		if (DurationValue != null)
+		{
+			string[] duration = DurationValue.Split(":");
+
+			Hours = string.IsNullOrWhiteSpace(duration.ElementAtOrDefault(0)) ? 0 : double.Parse(duration[0]);
+			Minutes = string.IsNullOrWhiteSpace(duration.ElementAtOrDefault(1)) ? 0 : double.Parse(duration[1]);
+			Seconds = string.IsNullOrWhiteSpace(duration.ElementAtOrDefault(2)) ? 0 : double.Parse(duration[2]);
+
+			Validate();
+		}
+	}
+
+	void Validate()
+	{
+		if (Minutes > 60)
+		{
+			Invalid = true;
+			ErrorMessage = "Minutes cannot be more than 60";
+		}
+		else if (Seconds > 60)
+		{
+			Invalid = true;
+			ErrorMessage = "Seconds cannot be more than 60";
+		}
+		else
+		{
+			Invalid = false;
+		}
+	}
+
+	void CalculateEnd()
+	{
+		if (!Invalid)
+		{
+			EndTime = StartTime.AddHours(Hours).AddMinutes(Minutes).AddSeconds(Seconds);
+		}
+	}
+}
+````
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