Hi Michael.
I recently read an old post written by you where you said: "I developed
Ajax.NET to have the
minimal of data that must be send from the server to the client."
this post was about using or not HtmlControlsUpdate, and you also said:
"I "hate" the HtmlControls because I never used them. I'm using
JavaScript on the client-side and with that I can build every HTML
control. So, the prefered way is to build JavaScript instead of sending
the HTML source code of rendered web controls."
So, let me ask you something, if you want to have a datagrid in your
page, wich of this two cases would you use? AND WHY?
Case 1 (RenderControl):
Javascript:
function datagrid_callback(res)
{
document.getElementById('mydg').innerHTML = res.value;
}
function datagrid(indice)
{
Methods.Datagrid(datagrid_callback);
}
ServerSide (C#):
[AjaxMethod]
public string Datagrid()
{
DataSet ds = new DataSet();
DataGrid dg = new DataGrid();
dg.DataSource = ds;/*some data*/
//...
dg.DataBind();
StringBuilder sb = new StringBuilder();
StringWriter stWriter = new StringWriter(sb);
HtmlTextWriter htmlWriter = new HtmlTextWriter(stWriter);
dg.RenderControl(htmlWriter);
return sb.ToString();
}
Case 2 (Javascript):
function datagrid_callback(res)
{
var ds = res.value.Tables[0];
var html = [];
html[html.length] = '<table">';
//...
//generate the rows of the table
//...
html[html.length] = '</table>';
document.getElementById("mydg").innerHTML = html.join("");
}
function datagrid()
{
Metodos.Datagrid(datagrid_callback);
}
ServerSide (C#):
[AjaxMethod]
public DataSet Datagrid()
{
SqlConnection conn = new SqlConnection("..");
SqlCommand cmd = new SqlCommand("some query", conn);
...
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
try
{
conn.Open();
try
{
da.Fill(ds);
}
catch (Exception)
{ }
finally
{
conn.Close();
conn.Dispose();
}
}
catch (Exception)
{ }
return ds;
}
Thanks for being here for us.
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