c# - Gridview postback datasource persistance -
i have grid data bound generic list. edit , need persist changes of, db.
the problem when hit submit button postback. , sets data source of gridview null.
i've tried storing data source in view state viewstate["data"] works great data isn't being updated in viewstate when changes made on grid.
any ideas?
here code gridview:
<asp:gridview id="dgmerchantconfiguration" runat="server" autogeneratecolumns="false" causesvalidation="false" custompagercssclass="" headerheight="30px" numberofpagesheight="15px" numberofpageswidth="40px" pagerheight="15px" pagerwidth="40px" showdatagridcustompaging="none" sortheight="15px" sortwidth="70px" backcolor="white" bordercolor="#999999" borderwidth="1px" cellpadding="1" font-size="smaller" gridlines="vertical" width="100%" onrowdatabound="dgmerchantconfiguration_rowdatabound" viewstatemode="enabled" enableviewstate="false"> <selectedrowstyle font-bold="true" forecolor="white" backcolor="#f80000"></selectedrowstyle> <alternatingrowstyle backcolor="gainsboro"></alternatingrowstyle> <rowstyle forecolor="black" backcolor="#eeeeee"></rowstyle> <headerstyle font-bold="true" forecolor="white" backcolor="#bd0000" horizontalalign="center"></headerstyle> <footerstyle forecolor="black" backcolor="#cccccc"></footerstyle> <columns> <asp:boundfield datafield="id" headertext="id"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> </asp:boundfield> <asp:boundfield datafield="commissiontype" headertext="commission type"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> </asp:boundfield> <asp:templatefield headertext="select"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:checkbox id="chkselect" runat="server" checked='<%# bind("selected") %>' oncheckedchanged="chkselect_checkedchanged" autopostback="true" /> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="override"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:checkbox id="chkoverride" runat="server" checked='<%# bind("default") %>' oncheckedchanged="chkoverride_checkedchanged" autopostback="true" /> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="comission structure"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:dropdownlist id="drpcommissionstructure" runat="server" width="200px" onselectedindexchanged="drpcommissionstructure_selectedindexchanged" autopostback="true"></asp:dropdownlist> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="min"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtmin" runat="server" width="50px" text='<%# bind("min") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="max"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtmax" runat="server" width="50px" text='<%# bind("max") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="fixed"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtfixed" runat="server" width="50px" text='<%# bind("fixed") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="cost per unit"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtcostperunit" runat="server" width="50px" text='<%# bind("costperunit") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="unit value"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtunitvalue" runat="server" width="50px" text='<%# bind("unitvalue") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="excluded amount"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtexclamount" runat="server" width="50px" text='<%# bind("excludedamount") %>'></asp:textbox> </itemtemplate> </asp:templatefield> <asp:templatefield headertext="percentage"> <headerstyle horizontalalign="center" cssclass="normalbold"></headerstyle> <itemstyle horizontalalign="center" cssclass="normal"></itemstyle> <itemtemplate> <asp:textbox id="txtpercentage" runat="server" width="50px" text='<%# bind("percentage") %>'></asp:textbox> </itemtemplate> </asp:templatefield> </columns> </asp:gridview> and how data source set:
protected void ddlmerchants_selectedindexchanged(object sender, eventargs e) { // load selected businesses config db var t = client.getmerchantcommissionstructure(new getmerchantcommissionstructurerequest() { merchantid = int32.parse(ddlmerchants.selecteditem.value) }); viewstate["data"] = t.configurations; dgmerchantconfiguration.datasource = t.configurations; dgmerchantconfiguration.databind(); } thanks in advance!
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