Assign value to HTML TextArea using JavaScript and jQuery in ASP.Net

Hi nauna,

You have to assign value using JavaScript or jQuery.

Using Javascript

string question = "Test";
var script = "document.getElementById('summernote').value='" + question + "'";
ClientScript.RegisterStartupScript(typeof(string), "Assign", script, true);

Using jQuery

string question = "Test";
var script = "$('#summernote').val('" + question + "');";
ClientScript.RegisterStartupScript(typeof(string), "Assign", script, true);

Hi nauna,

Please take reference to the below code and correct your code.

HTML

 <textarea id="summernote" name="editordata" required="required" style="width: 100%;
        height: 150px;"></textarea>

Namespaces

C#

using System.Data;

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] { new DataColumn("Question", typeof(string)) });
        dt.Rows.Add("What Did You Think About Me ?");
        string question = (string)dt.Rows[0]["Question"];
        var script = "document.getElementById('summernote').value='" + question + "'";
        ClientScript.RegisterStartupScript(typeof(string), "Assign", script, true);
    }
}

Screenshot