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使用 SQL 从数据库获取数据,但在 ASP.NET Core 的文本框中隐藏我的占位符

[英]Getting data from database using SQL but hide my placeholder in textbox in ASP.NET Core

I get data from a database using a SQL query in which I search for data and display that data.我使用 SQL 查询从数据库中获取数据,我在其中搜索数据并显示该数据。 But in the textbox it already have a value 0 that hides my placeholder.但是在文本框中它已经有一个值 0 隐藏了我的占位符。 Kindly tell me any other solution.请告诉我任何其他解决方案。

View:看法:

<input type="text" placeholder="price" asp-for="Input.price" 
       style="height: 50px; border-color: black; border-style:solid; margin-top: 5px; margin-bottom: 3px; border-radius: 5px;" />

Controller: Controller:

public IActionResult Rent(inputModel input, int PageNumber = 1)
{
    var data = rdb.GetDataHouse();
    var datas = rdb.GetDataHouse();

    ViewBag.Data = datas.ToList().Take(7);
    ViewBag.Totalpages = Math.Ceiling(data.Count() / 6.0);

    if (!string.IsNullOrEmpty(input.areaunit))
    {
        data = data.Where(x => x.areaUnit == input.areaunit & x.area == input.area & x.price <= input.price).ToList();
    }

    data = data.Skip((PageNumber - 1) * 6).Take(6).ToList();

    var viewModel = new RentModel
            {
                Data = data,
                //SearchList =   List<string>(),
                Input = new inputModel(),
            };

    return View(viewModel);
}

Input model:输入 model:

public class inputModel
{
    public string? areaunit { get; set; }
    public int area { get; set; }
    public int price { get; set; }
}

Rent model:出租model:

public class RentModel
{
    public List<eHouse.Models.RentModel>? Data { get; set; }
    public List<string>? SearchList { get; set;}
    public inputModel? Input { get; set; }
}

Make the property nullable by changing the price declaration to:通过将price声明更改为以下方式使属性可为空:

public int? price { get; set; }

When the price property is declared as int it has 0 value by default.price属性声明为int时,默认情况下它的值为0 Therefore, the placefolder doesn't applied.因此,不应用placefolder

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