Set Html Checkbox checked from code behind without runat=server

Question

I have checkboxes in my aspx page as :

<input type="checkbox" name="daySelectors" value="monday"/>
<input type="checkbox" name="daySelectors" value="tuesday"/>
<input type="checkbox" name="daySelectors" value="wednesday"/>

I am not using CheckBoxList control as these checkboxes are at different areas in my html and i need value of only selected checkboxes. Now, I can get the values of selected Checkboxes using

String dayselector = Request.Form["daySelectors"];

It works fine until here. The problem is how can i make the checkboxes checked from code behind ie my aspx.cs page. The scenario is when i come to this page i have the checkboxes values that need to be checked by default. How can i do this using the values. One way that comes to mind is i can trigger a jquery/ Javascript function from .cs passing in the values. In that case how can i set checkbox checked using their values from jquery.

Answer 1

Finally i just called a Javascript method from my .cs file using

ScriptManager.RegisterClientScriptBlock(this, typeof(string), "uniqueKey","SetCheckBox('sunday');",true)

and to the JavaScript method passed in the value of CheckBox that needs to be checked :

function SetCheckBox(value) {
        $("input:checkbox[value=" + value + "]").attr("checked", true);
    }

Answer 2

You cannot. If the control is not runat=server , you don't have access to it in code behind.

Answer 3

如果您绝对不想使用runat =“ server”（但我认为您不想使用它的原因可能是出于误解），则可以始终在Page类中具有一些自定义属性，然后再添加属性（例如“选择”）直接进入您的复选框标记...

 <input type="checkbox" selected="<%=SelectedAttribute%>" .... />

Answer 4

In the checkbox tag:

in the codebehind:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)
        {
            try
            {
                if (Request.Form["Archived"].ToString() == "1")
                {
                    Session["checkboxstate"] = " checked='checked' ";
                }
            }
            catch (Exception eee)
            {
                Session["checkboxstate"] = "";
            }
        }
    }

Worked for me.