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How to use Json to replace viewstate using in GridView RRS feed

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  • User-86041214 posted

    Dear All:

    My project is web form, and I recently hope to use json.net to replace the viewstate using in gridview, like following:

    [Serializable]
    public class MyDataForm
    {
    	public string LocationCode { get; set; }
    	public string ProjectNo { get; set; }
    	public string PatientName { get; set; }
    	public string PersonID { get; set; }
    	public string PdfURL { get; set; }
    	public string Memos { get; set; }
    }
    
    public List<MyDataForm> MyDataList { set { ViewState["MyDataList"] = value; } get { return ViewState["MyDataList"] as List<MyDataForm>; } }
    
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
    	GridView1.EditIndex = -1;
    	GridView1.PageIndex = e.NewPageIndex;
    	GridView1.DataSource = MyDataList;
    	GridView1.DataBind();
    }
    
    

    I hope to store the data in HiddenField, and then  catch the data back via JsonConvert.DeserializeObject<MyDataForm>( $("#hiddenFieldID").val()) when post back each time. 

    The main problem is come from when to replace viewstate in ASP life cycle. 

    In which stage, like Page_init, the gridview will call databind(), and if I can put the data which deserialize by Json in datasource, 

    And then I think it can replace viewstate completely, is anyone know how to make that, thanks a lot. 

    Tuesday, March 13, 2018 7:42 AM

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