Updating information by ID in a database - ASP.NET/C# -


thanks looking @ question in advanced.

i trying update information in database save button.

at moment have got saving, saves update new row.

i have got id of row wish change struggling work.

asp.net:

<asp:button runat="server" id="btnsave" cssclass="btnsubmit" text="save" onclick="btnsave_click" />

c#:

protected void btnsave_click(object sender, eventargs e) {     int itemid = 0;     var item = placements.getplacementbyexpiry(itemid, false);     if (item == null)     {         item = new placements();     }      item.categoryid = convert.toint32(ddlcategory.selectedvalue);     item.title = txttitle.text;     item.company = txtcompany.text;     item.location = txtlocation.text;     item.duration = txtduration.text;     item.salaryfrom = convert.todecimal(txtsalaryfrom.text);     item.salaryto = convert.todecimal(txtsalaryto.text);     item.salarytype = ddlsalarytype.text;     item.description = txtdescription.text;     item.responsibilities = txtresponsibilities.text;     item.requirements = txtrequirements.text;     datetime expirydate = datetime.parseexact(txtexpirydate.text, "dd/mm/yyyy", system.globalization.cultureinfo.invariantculture);     item.expirydate = expirydate;     item.datecreated = datetime.now;      if (item.id == 0)     {         placements.createplacement(item);     }     else     {         placements.updateplacement(item);     }      mvedit.setactiveview(vwlist); }

i have tried putting command argument on button , changed in end, receive following error:

error   1   no overload 'btnsave_click' matches delegate 'system.eventhandler'  c:\users\laura\documents\visual studio 2010\websites\thirdyearproject\tools\controls\placements\edit.ascx   239

i've been trying fix while i'm not sure i'm doing wrong! appreciated.

i think item.id == 0 not 0 either null or other values. please check value of that.


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