Invalid postback or callback argument

ShowFooter="true" AllowPaging="true" AllowSorting="true" HeaderStyle-BackColor="#61A6F8" EnableViewState="true"

ForeColor="white" HeaderStyle-ForeColor="White" PageSize="4" OnRowCancelingEdit="gvItems_RowCancelingEdit"

OnRowCommand="gvItems_RowCommand" OnRowDeleting="gvItems_RowDeleting" OnRowEditing="gvItems_RowEditing"

OnRowUpdating="gvItems_RowUpdating" OnPageIndexChanging="gvItems_PageIndexChanging">

ToolTip="Update" Height="20px" Width="20px" />

ToolTip="Cancel" Height="20px" Width="20px" />

ToolTip="Edit" Height="20px" Width="20px" />

ImageUrl="~/Images/delete.jpg" ToolTip="Delete" Height="20px" Width="20px" />

CommandName="AddNew" Width="30px" Height="30px" ToolTip="Add new User" />

FilterType="Numbers">

Rows="5">

FilterType="Numbers">

Height="150px" />

and .cs code

public partial class AddItems : System.Web.UI.Page

{

SqlConnection con;

SqlCommand ecmd, acmd, dcmd;

string str = ConfigurationManager.ConnectionStrings["connect"].ConnectionString;

LoginView lv;

protected void Page_Load(object sender, EventArgs e)

{

lv = (LoginView)Master.FindControl("HeadLoginView");

if (!lv.Page.User.Identity.IsAuthenticated)

{

Response.Redirect("~/Account/Login.aspx?ReturnUrl=~/AddItems.aspx");

}

else

{

string lname = lv.Page.User.Identity.Name;

if (!lname.Equals("amit"))

{

Response.Redirect("Default.aspx");

}

if (!IsPostBack)

{

showDataItem();

}

else

{

DataSet tempDs = gvItems.DataSource as DataSet;

gvItems.DataSource = tempDs;

gvItems.DataBind();

}

protected void showDataItem()

{

con = new SqlConnection(str);

con.Open();

SqlCommand cmd = new SqlCommand("select * from Items", con);

SqlDataAdapter da = new SqlDataAdapter(cmd);

DataSet ds = new DataSet();

da.Fill(ds);

gvItems.DataSource = ds;

gvItems.DataBind();

con.Close();

}

protected void gvItems_RowCommand(object sender, GridViewCommandEventArgs e)

{

if (e.CommandName.Equals("AddNew"))

{

lblMsg.Text = "";

con = new SqlConnection(str);

con.Open();

int IcatID = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfCategoryID")).Text);

string Iname = ((TextBox)gvItems.FooterRow.FindControl("txtfname")).Text;

string Idesc = ((TextBox)gvItems.FooterRow.FindControl("txtfDescription")).Text;

int IPrice = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfPrice")).Text);

int IQuantity = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfQuantity")).Text);

string IStatus = ((TextBox)gvItems.FooterRow.FindControl("txtfStatus")).Text;

FileUpload IImag = (FileUpload)gvItems.FooterRow.FindControl("fuAddImg");

if (IImag.HasFile)

{

IImag.SaveAs(Server.MapPath("~/Images/Items/") + IImag.FileName);

acmd = new SqlCommand("insert into Items(CategoryID,Name,Description,Price,Quantity,Status,ImageUrl) values (@a,@b,@c,@d,@e,@f,@g)", con);

acmd.Parameters.AddWithValue("@a", IcatID);

acmd.Parameters.AddWithValue("@b", Iname);

acmd.Parameters.AddWithValue("@c", Idesc);

acmd.Parameters.AddWithValue("@d", IPrice);

acmd.Parameters.AddWithValue("@e", IQuantity);

acmd.Parameters.AddWithValue("@f", IStatus);

acmd.Parameters.AddWithValue("@g", "~/Images/Items/" + IImag.FileName);

acmd.ExecuteNonQuery();

con.Close();

}

else

{

lblMsg.Text = "Item category requires an Image";

lblMsg.ForeColor = Color.Red;

}

showDataItem();

}

protected void gvItems_RowDeleting(object sender, GridViewDeleteEventArgs e)

{

int getItemID = Convert.ToInt32(gvItems.DataKeys[e.RowIndex].Values["ItemID"].ToString());

con = new SqlConnection(str);

con.Open();

dcmd = new SqlCommand("delete from Items where ItemID=@a", con);

dcmd.Parameters.AddWithValue("@a", getItemID);

int flag = dcmd.ExecuteNonQuery();

if (flag == 1)

{

lblMsg.Text = "Record Deleted Successfully";

lblMsg.ForeColor = Color.Green;

}

else

{

lblMsg.Text = "Deletion UnSuccessfull";

lblMsg.ForeColor = Color.Red;

}

con.Close();

showDataItem();

}

protected void gvItems_RowEditing(object sender, GridViewEditEventArgs e)

{

DataSet tempDs = gvItems.DataSource as DataSet;

gvItems.EditIndex = e.NewEditIndex;

gvItems.DataSource = tempDs;

gvItems.DataBind();

}

protected void gvItems_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

GridViewRow row = gvItems.Rows[e.RowIndex];

int itemEID=Convert.ToInt32(gvItems.DataKeys[e.RowIndex].Values["ItemID"].ToString());

TextBox txtCatID = (TextBox)row.FindControl("txtCatID");

string Iname = ((TextBox)row.FindControl("txtname")).Text;

string Idesc = ((TextBox)row.FindControl("txtDescription")).Text;

int IPrice = Convert.ToInt32(((TextBox)row.FindControl("txtPrice")).Text);

int IQuantity = Convert.ToInt32(((TextBox)row.FindControl("txtQuantity")).Text);

string IStatus = ((TextBox)row.FindControl("txtStatus")).Text;

FileUpload Iimg =(FileUpload) row.FindControl("fuEditImage");

if (Iimg.HasFile)

{

Iimg.SaveAs(Server.MapPath("~/Images/Items/") + Iimg.FileName);

con = new SqlConnection(str);

con.Open();

SqlCommand cmdf = new SqlCommand("update Items set CategoryID=@uci,Name=@uname,Description=@udesc,Price=@uprice,Quantity=@uquan,Status=@ustatus,ImageUrl=@uimg where ItemID=@uitem", con);

cmdf.Parameters.AddWithValue("@uci", txtCatID.Text);

cmdf.Parameters.AddWithValue("@uname", Iname);

cmdf.Parameters.AddWithValue("@udesc", Idesc);

cmdf.Parameters.AddWithValue("@uprice", IPrice);

cmdf.Parameters.AddWithValue("@uquan", IQuantity);

cmdf.Parameters.AddWithValue("@ustatus", IStatus);

cmdf.Parameters.AddWithValue("@uimg", "~/Images/Items/" + Iimg.FileName);

cmdf.Parameters.AddWithValue("@uitem", itemEID);

cmdf.ExecuteNonQuery();

con.Close();

gvItems.EditIndex = -1;

showDataItem();

con.Close();

}

else

{

con = new SqlConnection(str);

con.Open();

SqlCommand cmdnf = new SqlCommand("update Items set CategoryID=@uci,Name=@uname,Description=@udesc,Price=@uprice,Quantity=@uquan,Status=@ustatus where ItemID=@uitem", con);

cmdnf.Parameters.AddWithValue("@uci", txtCatID.Text);

cmdnf.Parameters.AddWithValue("@uname",Iname);

cmdnf.Parameters.AddWithValue("@udesc",Idesc);

cmdnf.Parameters.AddWithValue("@uprice",IPrice);

cmdnf.Parameters.AddWithValue("@uquan",IQuantity);

cmdnf.Parameters.AddWithValue("@ustatus",IStatus);

cmdnf.Parameters.AddWithValue("@uitem", itemEID);

cmdnf.ExecuteNonQuery();

con.Close();

gvItems.EditIndex = -1;

showDataItem();

}

protected void gvItems_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{

gvItems.EditIndex = -1;

showDataItem();

}

protected void gvItems_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

gvItems.PageIndex = e.NewPageIndex;

showDataItem();

}

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sanjeeb Lenka13y ago
Accepted answer
Hi Amit,

its happening due to binding the grid view in pageload

if (!IsPostBack)
        {
            showDataItem();
        }
        else
        {
            DataSet tempDs = gvItems.DataSource as DataSet;
            gvItems.DataSource = tempDs;
            gvItems.DataBind();
        }

in the above code why are you binding the grid again because its already binding within showdataItem():

remove this three line and check.

if (!IsPostBack)
        {
            showDataItem();
        }
Amit Kumar13y ago
thnk you sir.
Amit Kumar13y ago
ShowFooter="true" AllowPaging="true" AllowSorting="true" HeaderStyle-BackColor="#61A6F8" EnableViewState="true"
ForeColor="white" HeaderStyle-ForeColor="White" PageSize="4" OnRowCancelingEdit="gvItems_RowCancelingEdit"
OnRowCommand="gvItems_RowCommand" OnRowDeleting="gvItems_RowDeleting" OnRowEditing="gvItems_RowEditing"
OnRowUpdating="gvItems_RowUpdating" OnPageIndexChanging="gvItems_PageIndexChanging">

ToolTip="Update" Height="20px" Width="20px" />

ToolTip="Cancel" Height="20px" Width="20px" />

ToolTip="Edit" Height="20px" Width="20px" />

ImageUrl="~/Images/delete.jpg" ToolTip="Delete" Height="20px" Width="20px" />

CommandName="AddNew" Width="30px" Height="30px" ToolTip="Add new User" />

FilterType="Numbers">

Rows="5">

FilterType="Numbers">

FilterType="Numbers">

FilterType="Numbers">

Height="150px" />

and .cs code

public partial class AddItems : System.Web.UI.Page
{
SqlConnection con;
SqlCommand ecmd, acmd, dcmd;
string str = ConfigurationManager.ConnectionStrings["connect"].ConnectionString;
LoginView lv;
protected void Page_Load(object sender, EventArgs e)
{
lv = (LoginView)Master.FindControl("HeadLoginView");
if (!lv.Page.User.Identity.IsAuthenticated)
{
Response.Redirect("~/Account/Login.aspx?ReturnUrl=~/AddItems.aspx");
}
else
{
string lname = lv.Page.User.Identity.Name;
if (!lname.Equals("amit"))
{
Response.Redirect("Default.aspx");
}
}
if (!IsPostBack)
{
showDataItem();
}
else
{
DataSet tempDs = gvItems.DataSource as DataSet;
gvItems.DataSource = tempDs;
gvItems.DataBind();
}
}

protected void showDataItem()
{
con = new SqlConnection(str);
con.Open();
SqlCommand cmd = new SqlCommand("select * from Items", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
gvItems.DataSource = ds;
gvItems.DataBind();
con.Close();
}

protected void gvItems_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.Equals("AddNew"))
{
lblMsg.Text = "";
con = new SqlConnection(str);
con.Open();
int IcatID = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfCategoryID")).Text);
string Iname = ((TextBox)gvItems.FooterRow.FindControl("txtfname")).Text;
string Idesc = ((TextBox)gvItems.FooterRow.FindControl("txtfDescription")).Text;
int IPrice = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfPrice")).Text);
int IQuantity = Convert.ToInt32(((TextBox)gvItems.FooterRow.FindControl("txtfQuantity")).Text);
string IStatus = ((TextBox)gvItems.FooterRow.FindControl("txtfStatus")).Text;
FileUpload IImag = (FileUpload)gvItems.FooterRow.FindControl("fuAddImg");
if (IImag.HasFile)
{
IImag.SaveAs(Server.MapPath("~/Images/Items/") + IImag.FileName);
acmd = new SqlCommand("insert into Items(CategoryID,Name,Description,Price,Quantity,Status,ImageUrl) values (@a,@b,@c,@d,@e,@f,@g)", con);
acmd.Parameters.AddWithValue("@a", IcatID);
acmd.Parameters.AddWithValue("@b", Iname);
acmd.Parameters.AddWithValue("@c", Idesc);
acmd.Parameters.AddWithValue("@d", IPrice);
acmd.Parameters.AddWithValue("@e", IQuantity);
acmd.Parameters.AddWithValue("@f", IStatus);
acmd.Parameters.AddWithValue("@g", "~/Images/Items/" + IImag.FileName);
acmd.ExecuteNonQuery();
con.Close();
}
else
{
lblMsg.Text = "Item category requires an Image";
lblMsg.ForeColor = Color.Red;
}
showDataItem();
}

}
protected void gvItems_RowDeleting(object sender, GridViewDeleteEventArgs e)
{

int getItemID = Convert.ToInt32(gvItems.DataKeys[e.RowIndex].Values["ItemID"].ToString());
con = new SqlConnection(str);
con.Open();
dcmd = new SqlCommand("delete from Items where ItemID=@a", con);
dcmd.Parameters.AddWithValue("@a", getItemID);
int flag = dcmd.ExecuteNonQuery();
if (flag == 1)
{
lblMsg.Text = "Record Deleted Successfully";
lblMsg.ForeColor = Color.Green;
}
else
{
lblMsg.Text = "Deletion UnSuccessfull";
lblMsg.ForeColor = Color.Red;
}
con.Close();
showDataItem();
}
protected void gvItems_RowEditing(object sender, GridViewEditEventArgs e)
{
DataSet tempDs = gvItems.DataSource as DataSet;
gvItems.EditIndex = e.NewEditIndex;
gvItems.DataSource = tempDs;
gvItems.DataBind();

}
protected void gvItems_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow row = gvItems.Rows[e.RowIndex];
int itemEID=Convert.ToInt32(gvItems.DataKeys[e.RowIndex].Values["ItemID"].ToString());
TextBox txtCatID = (TextBox)row.FindControl("txtCatID");
string Iname = ((TextBox)row.FindControl("txtname")).Text;
string Idesc = ((TextBox)row.FindControl("txtDescription")).Text;
int IPrice = Convert.ToInt32(((TextBox)row.FindControl("txtPrice")).Text);
int IQuantity = Convert.ToInt32(((TextBox)row.FindControl("txtQuantity")).Text);
string IStatus = ((TextBox)row.FindControl("txtStatus")).Text;
FileUpload Iimg =(FileUpload) row.FindControl("fuEditImage");
if (Iimg.HasFile)
{
Iimg.SaveAs(Server.MapPath("~/Images/Items/") + Iimg.FileName);
con = new SqlConnection(str);
con.Open();
SqlCommand cmdf = new SqlCommand("update Items set CategoryID=@uci,Name=@uname,Description=@udesc,Price=@uprice,Quantity=@uquan,Status=@ustatus,ImageUrl=@uimg where ItemID=@uitem", con);
cmdf.Parameters.AddWithValue("@uci", txtCatID.Text);
cmdf.Parameters.AddWithValue("@uname", Iname);
cmdf.Parameters.AddWithValue("@udesc", Idesc);
cmdf.Parameters.AddWithValue("@uprice", IPrice);
cmdf.Parameters.AddWithValue("@uquan", IQuantity);
cmdf.Parameters.AddWithValue("@ustatus", IStatus);
cmdf.Parameters.AddWithValue("@uimg", "~/Images/Items/" + Iimg.FileName);
cmdf.Parameters.AddWithValue("@uitem", itemEID);
cmdf.ExecuteNonQuery();
con.Close();
gvItems.EditIndex = -1;
showDataItem();
con.Close();
}
else
{
con = new SqlConnection(str);
con.Open();
SqlCommand cmdnf = new SqlCommand("update Items set CategoryID=@uci,Name=@uname,Description=@udesc,Price=@uprice,Quantity=@uquan,Status=@ustatus where ItemID=@uitem", con);
cmdnf.Parameters.AddWithValue("@uci", txtCatID.Text);
cmdnf.Parameters.AddWithValue("@uname",Iname);
cmdnf.Parameters.AddWithValue("@udesc",Idesc);
cmdnf.Parameters.AddWithValue("@uprice",IPrice);
cmdnf.Parameters.AddWithValue("@uquan",IQuantity);
cmdnf.Parameters.AddWithValue("@ustatus",IStatus);
cmdnf.Parameters.AddWithValue("@uitem", itemEID);
cmdnf.ExecuteNonQuery();
con.Close();
gvItems.EditIndex = -1;
showDataItem();
}
}
protected void gvItems_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
gvItems.EditIndex = -1;
showDataItem();
}
protected void gvItems_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
gvItems.PageIndex = e.NewPageIndex;
showDataItem();
}
}
Sanjeeb Lenka13y ago
plz share you code...

Invalid postback or callback argument

Invalid postback or callback argument.