c# - How to get Textbox control in C#

Question

I have a HTML textbox

<script>
    $(function () {
        $("#datepicker").datepicker({
            changeMonth: true,
            changeYear: true
        });
    });
</script>

<input type="text" size="10" name="datepicker" id="datepicker" />

Now i need to set the value of textbox to "abcd";

I tried datepicker.Text = "abcd"; Error is "the name datepicker does not exist in current context"...

I tried finding the Control and assigning the value but still could not do it.

Is there any other way to do it?? Thanks

Answer 1

您首先需要使用以下属性使您的<input>控件成为服务器端标记：runat="Server"

<input runat="server" type="text" size="10" name="datepicker" id="datepicker" />

然后，您可以使用 C# 代码修改该值：

protected void Page_Load(object sender, EventArgs e)
{
   datepicker.Text = "New Value"; // Initial value for input field
}

如果您想使用 jQuery 在客户端修改值，我首先建议将 ID 设为静态：

<input runat="server" ClientIDMode="Static" type="text" size="10" name="datepicker" id="datepicker" />

然后你可以这样做：

$("#datepicker").val('New Value');

页面加载后的任何地方。