Problem related to insert/update record

[navneetkaur]

Updation Should Reflect at same time
hi every1
i am stuck at 1 place...i want whatever updation i do it should be reflected at the same time in table(i am using table to display all records)then if i delete 1 record frm this table it shd be reflected at the same time in table....bt its not working i am using following codeplz help me....m waiting fr ur response....


code is

        SqlCommand cmd;
        string str;
        conn.Open();
        str = "update cur_month_ach set active = 0 where rowid=" + rwid + "";
        cmd = new SqlCommand(str, conn);
        int temp = cmd.ExecuteNonQuery();
        conn.Close();
 

'd there is 1 html table in which i displayed all these records 'd there is 1 command button deactivate....when i click on this i pass row id 'd above procedure is called.....

[mohitkatariya]

After Updation you must have to fetch data again from the table and show it in table.

Updation Should Reflect at same time
hi every1
i am stuck at 1 place...i want whatever updation i do it should be reflected at the same time in table(i am using table to display all records)then if i delete 1 record frm this table it shd be reflected at the same time in table....bt its not working i am using following codeplz help me....m waiting fr ur response....


code is

        SqlCommand cmd;
        string str;
        conn.Open();
        str = "update cur_month_ach set active = 0 where rowid=" + rwid + "";
        cmd = new SqlCommand(str, conn);
        int temp = cmd.ExecuteNonQuery();
        conn.Close();
 

'd there is 1 html table in which i displayed all these records 'd there is 1 command button deactivate....when i click on this i pass row id 'd above procedure is called.....

[navneetkaur]

After Updation you must have to fetch data again from the table and show it in table.

hello mohit thanx a lot fr reply
but i hv nt done so because it vl create overhead on system...this table creation is called during pageload event.....bt acc to me coz of page life cycle its nt updating....
sp olz if u hv any idea help me...m waiting

[mohitkatariya]

Hi Navneet
You might hv written your code in
if(!Page.IsPostBack)
{
//your code
}
So according to page's life cycle this code will not run again untill postback is not equal to false again. So after updating ur database u have to rebind ur table.
I think thats the only way...

hello mohit thanx a lot fr reply
but i hv nt done so because it vl create overhead on system...this table creation is called during pageload event.....bt acc to me coz of page life cycle its nt updating....
sp olz if u hv any idea help me...m waiting

[navneetkaur]

Hi Navneet
You might hv written your code in
if(!Page.IsPostBack)
{
//your code
}
So according to page's life cycle this code will not run again untill postback is not equal to false again. So after updating ur database u have to rebind ur table.
I think thats the only way...

hi mohit....
i have jst added this fxn without checking ispostback it is executed at every time......its already rebuilding after every postback....nw plz if u hv solution tell me....

[Frinavale]

hello mohit thanx a lot fr reply
but i hv nt done so because it vl create overhead on system...this table creation is called during pageload event.....bt acc to me coz of page life cycle its nt updating....
sp olz if u hv any idea help me...m waiting

If you create the table (the data source for your GridView) with every page load your Update function will not work.

You should only create the table (the data source for your GridView) only once...when it is Not Postback... and store the table somewhere (like Session) so that you don't have to recreate it every time your page is loaded.....this is good practice for Many reasons. (One reason being that all of the data a user provides for an Update will be lost when you recreate the DataSource for the GridView in the PageLoad....because the original data is lost when the DataSource is changed...and the PageLoad event happens before the Update event occurs...)

Once you have completed your Delete or Update you should recreate the table (the data source for your GridView)...then DataBind your GridView to the Updated DataSource to reflect the changes.

-Frinny

[mohitkatariya]

Hi Navneet
You told that you have not checked 'ispostback' property. I think your data might be updated because when you click update button first pageload event will be fired where u have wriiten your gridbind code, So when page load fires again it will take data from original data and the chngd values will be lost. Check your data in query analyzer that it is updatied or not.
seq of event is Page_load->Button_Click
you can check this by putting breakpoints in your code.
So i think you must put ur grid binding proc. in postback event.
If u still getting prblm then give me more details abt ur code.
Hope it will work....

hi mohit....
i have jst added this fxn without checking ispostback it is executed at every time......its already rebuilding after every postback....nw plz if u hv solution tell me....

[navneetkaur]

If you create the table (the data source for your GridView) with every page load your Update function will not work.

You should only create the table (the data source for your GridView) only once...when it is Not Postback... and store the table somewhere (like Session) so that you don't have to recreate it every time your page is loaded.....this is good practice for Many reasons. (One reason being that all of the data a user provides for an Update will be lost when you recreate the DataSource for the GridView in the PageLoad....because the original data is lost when the DataSource is changed...and the PageLoad event happens before the Update event occurs...)

Once you have completed your Delete or Update you should recreate the table (the data source for your GridView)...then DataBind your GridView to the Updated DataSource to reflect the changes.

-Frinny

First of all Thanx Sir.....i got ur point bt i am not able to do like that coz whenever i place this table creation on PageLoad as ispostback property...it disappear from the page....sir i am going to write my code.....plz help me by providing coding.....

 
 
public partial class _Default : System.Web.UI.Page 
{
    Class1 cls;
    DataSet ds;
 
    int curyear, curmonth;
    string rowid;
    protected void Page_Load(object sender, EventArgs e)
    {
        cls = new Class1();
        ds = new DataSet();
        cur_proj_assigned();  //this is where i am calling table  
//   creation...bt it does nt update without response.redirect(to same page);
 }
//this module is creating table dynamically to display records....
    public void cur_proj_assigned()
    {
            DataSet ds = new DataSet();//to show achievements fr current month
            curmonth = 09;
            curyear = 2007;
            ecode="012345";
            ds = cls.cur_month_ach(ecode, curmonth, curyear);
 
 
            string project_title, project_description, div_name = "";
            string div_code;
            Modcur.EnableViewState = true;
            if (ds.Tables[0].Rows.Count > 0)
            {
 
                HtmlTableRow r3 = new HtmlTableRow();
                HtmlTableCell c5 = new HtmlTableCell();
                c5.ColSpan = 5;
                c5.Align = "left";
                c5.BgColor = "#ccffff";
                c5.Height = "23px";
                r3.Cells.Add(c5);
 
                HtmlTableRow r4 = new HtmlTableRow();
                HtmlTableCell c6 = new HtmlTableCell();
                c6.InnerText = "Select";
                HtmlTableCell c7 = new HtmlTableCell();
                c7.InnerText = "Project Title ";
                HtmlTableCell c8 = new HtmlTableCell();
                c8.InnerText = "Project Description";
                HtmlTableCell c9 = new HtmlTableCell();
                c9.InnerText = "Status";
                HtmlTableCell c10 = new HtmlTableCell();
                c10.InnerText = " Project Division";
 
                r4.Cells.Add(c6);
                r4.Cells.Add(c7);
                r4.Cells.Add(c8);
                r4.Cells.Add(c10);
                r4.Cells.Add(c9);
 
                Modcur.Rows.Add(r3);
                Modcur.Rows.Add(r4);
            }
            int temp = ds.Tables[0].Rows.Count;
 
            for (int i = 0; i < temp; i++)
            {
                string div_name1;
                DataSet ds1 = new DataSet();
                rowid = ds.Tables[0].Rows[i][1].ToString();
                project_title = ds.Tables[0].Rows[i][4].ToString();
                project_description = ds.Tables[0].Rows[i][5].ToString();
                c = ds.Tables[0].Rows[i][6].ToString();
                div_code = ds.Tables[0].Rows[i][7].ToString();
                if (div_code != "")
                {
                    div_name1 = cls.fetch_division_name(div_code);
                    div_name = div_name1;
                }
                HtmlInputHidden idh = new HtmlInputHidden();
                RadioButton rd = new RadioButton();
                rd.GroupName = "rdbtn_grp";
                rd.ID = "rid" + i;
                idh.ID = "hhd" + i;
 
                idh.Value = rowid.ToString();//put database value here
 
                HtmlTableCell c1 = new HtmlTableCell();
                c1.ColSpan = 1;
                c1.Controls.Add(rd);
                c1.Controls.Add(idh);
 
 
                TextBox prjtitle = new TextBox();
 
                prjtitle.TextMode = TextBoxMode.MultiLine;
                prjtitle.Text = project_title;
                prjtitle.ReadOnly = true;
                HtmlTableCell c2 = new HtmlTableCell();
                c2.ColSpan = 1;
                c2.Controls.Add(prjtitle);
 
                TextBox prjdesc = new TextBox();
 
                prjdesc.TextMode = TextBoxMode.MultiLine;
                prjdesc.Text = project_description;
                prjdesc.ReadOnly = true;
                HtmlTableCell c3 = new HtmlTableCell();
                c3.ColSpan = 1;
                c3.Controls.Add(prjdesc);
 
                TextBox division_txt = new TextBox();
 
                division_txt.TextMode = TextBoxMode.MultiLine;
                division_txt.Text = div_name;
                division_txt.ReadOnly = true;
                HtmlTableCell c5 = new HtmlTableCell();
                c5.ColSpan = 1;
                c5.Controls.Add(division_txt);
 
                HtmlTableCell c4 = new HtmlTableCell();
                Label status1 = new Label();
                if (c == "True")
                {
                    status1.Text = "Active";
                    c4.BgColor = "99ccff";
                }
                else
                {
                    status1.Text = "DeActive";
                    c4.BgColor = "ccffcc";
                }
                c4.ColSpan = 1;
                c4.Controls.Add(status1);
                HtmlTableRow r1 = new HtmlTableRow();
                r1.Cells.Add(c1);
                r1.Cells.Add(c2);
                r1.Cells.Add(c3);
                r1.Cells.Add(c5);
                r1.Cells.Add(c4);
 
                Modcur.Rows.Add(r1);
            }
 
            if (ds.Tables[0].Rows.Count > 0)
            {
               Button deactachievements = new Button();
 
                deactachievements.ID = "deactach";
                deactachievements.Text = "DeActivate";
                deactachievements.Click += new EventHandler(deactachievements_Click);
 
                HtmlTableCell c4 = new HtmlTableCell();
                c4.ColSpan = 5;
 
                c4.Controls.Add(deactachievements);
 
                HtmlTableRow r2 = new HtmlTableRow();
                r2.Cells.Add(c4);
                Modcur.Rows.Add(r2);
            }
 
    }
 //click event of delete button of current month added project
    protected void deactachievements_Click(object sender, System.EventArgs e)
    {
           int rowid = 0;
            RadioButton rowid1 = new RadioButton();
            HtmlInputHidden htt = new HtmlInputHidden();
            int i = 0;
            foreach (Control rd in Modcur.Controls)
            {
                rowid1 = (RadioButton)Modcur.FindControl("rid" + i);
                htt = (HtmlInputHidden)Modcur.FindControl("hhd" + i);
                i += 1;
                if (rowid1 != null && rowid1.Checked)
                    rowid = int.Parse(htt.Value);
            }
            cls.cur_month_deactivate(rowid);
            //Server.Transfer("Default.aspx");
    }
}

Sir i have placed my code this is jst a abstract of full code....sir like above 1 dynamic button DEACTIVATE i hv to attach so many buttons also....Sir plz help me....

[Frinavale]

First of all Thanx Sir.....i got ur point bt i am not able to do like that coz whenever i place this table creation on PageLoad as ispostback property...it disappear from the page....sir i am going to write my code.....plz help me by providing coding.....

Sir i have placed my code this is jst a abstract of full code....sir like above 1 dynamic button DEACTIVATE i hv to attach so many buttons also....Sir plz help me....

You are doing Way too much work here.
A GridView has a method called DataBind.
What you do is set your GridView.Source = some Data Set (or something) and then call the GridView.DataBind to "Bind" that data to the GridView.

Please look at the GridView Class as described by MSDN...particularly the following part:

Binding to Data

The GridView control can be bound to a data source control (such as SqlDataSource, ObjectDataSource, and so on), as well as any data source that implements the System.Collections.IEnumerable interface (such as System.Data.DataView, System.Collections.ArrayList, or System.Collections.Hashtable).
.....
To bind to a data source that implements the System.Collections.IEnumerable interface, programmatically set the DataSource property of the GridView control to the data source and then call the DataBind method. When using this method, the GridView control does not provide built-in sorting, updating, deleting, and paging functionality. You need to provide this functionality by using the appropriate event.

Using the DataBind method will get rid of most of your code.
All you need to do is create the DataSource (your data set) Once...in the page load when it is not postback...and store it in Session (or somewhere) so that you don't need to recreate it over and over again....

Please look at the GridView Class (documentation provided by MSDN). You will find a lot of tutorials on this page along with examples and anything else you would like to know.

Cheers!
-Frinny

[mohitkatariya]

hi navneet i read ur code.
as i said u r calling ur function "cur_proj_assigned " without ispostback so ur values are not saved.
if u put ur function in postback it will run only one time and u hv to call it after updationation agn and it will not put extra overhead on ur programe. ur function is called with pageload everytime now but after postback it will be called only first time in pageload, and agn whn u called it after button click.
so there will be no prblm related to efficiency of the form.

[navneetkaur]

hi navneet i read ur code.
as i said u r calling ur function " without ispostback so ur values are not saved.
if u put ur function in postback it will run only one time and u hv to call it after updationation agn and it will not put extra overhead on ur programe. ur function is called with pageload everytime now but after postback it will be called only first time in pageload, and agn whn u called it after button click.
so there will be no prblm related to efficiency of the form.

hi mohitkatariya thanx for seeing this...mohit i agree to ur suggestion bt nw actually problem is on this page i am having near abt 12 buttons i have jst posted 1 just coz of convience......then i hv to call this fxn "cur_proj_assigned " on every button click...i vl try this if it works i vl tell u....thanx for spending ur valuable time on this problem.....

[navneetkaur]

You are doing Way too much work here.
A GridView has a method called DataBind.
What you do is set your GridView.Source = some Data Set (or something) and then call the GridView.DataBind to "Bind" that data to the GridView.

Please look at the GridView Class as described by MSDN...particularly the following part:

Binding to Data

The GridView control can be bound to a data source control (such as SqlDataSource, ObjectDataSource, and so on), as well as any data source that implements the System.Collections.IEnumerable interface (such as System.Data.DataView, System.Collections.ArrayList, or System.Collections.Hashtable).
.....
To bind to a data source that implements the System.Collections.IEnumerable interface, programmatically set the DataSource property of the GridView control to the data source and then call the DataBind method. When using this method, the GridView control does not provide built-in sorting, updating, deleting, and paging functionality. You need to provide this functionality by using the appropriate event.

Using the DataBind method will get rid of most of your code.
All you need to do is create the DataSource (your data set) Once...in the page load when it is not postback...and store it in Session (or somewhere) so that you don't need to recreate it over and over again....

Please look at the GridView Class (documentation provided by MSDN). You will find a lot of tutorials on this page along with examples and anything else you would like to know.

Cheers!
-Frinny

thanx sir i do agree with u bt sir acc to my TL requirement it works like that coz sir there are 4 more click events on this table which is nt possible in gridview....so sir plz tell me solution....sir nw i have placed this code in ispostback property bt nw i am nt able to keep this table state 'd rebuild it again on click event..bt sir 2dy i vl complete it..then i let u knw...thanx fr spending ur valuable time....

[navneetkaur]

hi every1 thanx for responding to my problem 'd
according to ur suggestions i placed fxn "cur_proj_assigned" on ispostback event....but nw 1 more problem is encountered that is click event of dynamically button is not fired because of dynamic controls event should be placed either on pageload or init event ... so plz tell me solution what i will do now......'d 1 thing more i am not able to again draw table.....

plz provide me coding if u knw.....
thanks
with warm regards
Navneet

[navneetkaur]

....waiting fr ur respone...its urgent

[mohitkatariya]

I think you have seprate ur function in two parts one is for desiging table n other is for binding. desining part is called on page load so that events get registered, while binding function will be called on every button click.
May be it will work. Hope for best...

....waiting fr ur respone...its urgent

[Frinavale]

hi every1 thanx for responding to my problem 'd
according to ur suggestions i placed fxn "cur_proj_assigned" on ispostback event....but nw 1 more problem is encountered that is click event of dynamically button is not fired because of dynamic controls event should be placed either on pageload or init event ... so plz tell me solution what i will do now......'d 1 thing more i am not able to again draw table.....

plz provide me coding if u knw.....
thanks
with warm regards
Navneet

Are you able to execute your update now?

-Frinny

[navneetkaur]

Are you able to execute your update now?

-Frinny

no sit till nw its not working...i hv done each way ....acc to sugestions.....
plz sir help me....


sir in this i am not able coz the whole table is generated dynamically i cnt seprate design time 'd binding....
waiting fr ur response...