This error can be removed by setting the EnableEventValidation of page's property to false. But what other repercussions there can be of doing this, I am not very sure of.
On Oct 6, 7:20 am, Barun <[email protected]> wrote: > Hi. > > I am having a big problem solving this error: > "Invalid postback or callback argument. Event validation is enabled > using <pages enableEventValidation="true"/> in configuration or <%@ > Page EnableEventValidation="true" %> in a page. For security purposes, > this feature verifies that arguments to postback or callback events > originate from the server control that originally rendered them. If > the data is valid and expected, use the > ClientScriptManager.RegisterForEventValidation method in order to > register the postback or callback data for validation." > > Scenario: > > I have a gridView which loads data when the page loads for the first > time. In the same page i have one search user control outside of > GridView which have dropdown and a submit button. User select from > dropdown and click submit button to pass dropdown selected index. The > page reloads and bind the Grid again with new information related with > search. > My GridView also have one user control inside gridview ItemTemplate > which have dynamically created labels, textboxes, checkboxes. Such > that when each row of GridView is clicked, user control shows up with > data related with that particular gridview row. > > Now, When i do search GridView filters out the information and show > data correctly, which is fine till here, but once i click on each row > to see the content of user control it display the above error. > When no search is performed, everything works fine. > > Please help me to solve this problem. Is it because i am binding > gridview on Page_Load for second time when search is performed. If > yes, then is there any other alternative to bind gridview with other > data source. > > Any help would be appreciated alot. > > protected void Page_Load(object sender, EventArgs e) > { > > if (!IsPostBack) > { > DataTable mDT = Utility.BuildDataTable("SELECT * FROM TABLE"); > GridView1.DataSource = mDT; > GridView1.DataBind(); > > } > > // Search results > > int ddltypeID = ddl.SelectedValue; > String strSql = ""; > String strAnd = ""; > > if (ddltypeID != -1) > { > strSql = strSql + strAnd + "Measure_Type = " + UCTypeID; > > DataTable dt = msadapter.GetData(); > DataRow[] dr = dt.Select(strSql); > > GridView1.DataSource = dr; > GridView1.DataBind(); > > > > } > }
