viewstate of dynamic text boxs - ASP.NET Discussion Boards

I'm sending you the code.In this, when we refresh the page, "gvQA.Rows.Count" shows 0 rows.

Here's code:

protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
gvQA.DataSource = null;
gvQA.DataBind();
BindQues();
}
}
#region Methods
public void BindQues()
{
try
{
if (Session["BindData"] == null)
{
ds = new DataSet();
ds = objGet.GetData(Request["JT"].ToString());
litMsg.Text = "Online Test";
if (ds != null)
{
if (ds.Tables[0].Rows.Count > 0)
{
gvQA.Visible = true;
gvQA.DataSource = ds;
gvQA.DataBind();
Session["BindData"] = ds;
}
else
{
gvQA.Visible = false;
}
}
}
else
{
ds =(DataSet)Session["BindData"];
gvQA.Visible = true;
gvQA.DataSource = ds;
gvQA.DataBind();
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}

Hi..

I am working on a web application and about to complete the project.
Now I am planning to execute error handling and logging errors to my sql server database.

I am using framework 3.5.

could you suggest me what could be the best approach to execute error handling.
or you can suggest me the best link available.

thanks,

By:
Hemant Thaker

1- Exception Handling Block

You can user the Error handling application block provided by Microsoft.

Exception Block[^]

2- ELMAH

In some of my previous projects I have used ELMAH ELMAH[^]

ELMAH is very efficient in exception handling with simple configuration.

WWW, WCF, WWF, WPF, WFC .... WTF

Yes, I think Enterprise Library Application Block is one of the bese solutaion.

Here is one of my article on Caching Application Block,
http://web1.codeproject.com/KB/web-cache/CachingApplicationBlock.aspx[^]

Which may not related with your question, but it will help you to understand about Application Block

Cheers !
Abhijit
Codeproject MVP

Dear All,
I am looking to add SplitButton Control in my webpage but I dont know what its called in ASP.Net
you can see that in following link http://dadafghanistan.gov.af/rc?sessionid=1269861720874211[^]

you just need to login which doesnt requires username and password and you can add columns to build a report, as you add a column an split button is added which you can do other action on that too.

any ideas what control is that?

Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan

Hi all,

I am having something like I want to access another computer through C#. After accessing this computer, I want to show some notification through notification control.
does any body know anything about it.

I need urgent help.

Thank you.

BK Komal wrote:
I need urgent help.

Don't be rude Mad | :mad:

I know the language. I've read a book. - _Madmatt

  private void Descriptiontable()
    {

        DescriptionClass dcss = new DescriptionClass();
        dcss.ProjectIDp = Convert.ToInt32(Session["ProjectId"].ToString());
        // dcss.ProjectIDp = Convert.ToInt32(ProjectIDText.Text);
        DataSet ds = new DataSet();
        dtDesc = dcss.DynamicDataSet().Tables[0];

        dtDesc.Columns.Add("DescriptionName1");
        dtDesc.Columns.Add("Date1");
        dtDesc.Columns.Add("Description1");
        int intID = 1;
        foreach (DataRow drow in dtDesc.Rows)
        {
            drow["ProjectID"] = intID++;
            drow["DescriptionName1"] = "qwe";
            drow["Date1"] = "";
            drow["Description1"] = "asdasd";
        }
        Session["dtDesc"] = dtDesc;
        if (dtDesc.Rows.Count == 0)
        {
            adddescription();
        }
        else
        {
            Bindrepeater();
        }
    }

    private void adddescription()
    {
        dtDesc = (DataTable)Session["dtDesc"];
        DataRow descRow = dtDesc.NewRow();
        //  descRow["ProjectID"] = dtDesc.Rows.Count + 1;
        descRow["DescriptionName"] = "";
        descRow["Date"] ="";
        descRow["Description"] = "";
        dtDesc.Rows.Add(descRow);
        Session["dtDesc"] = dtDesc;
        Bindrepeater();
    }

    private void Bindrepeater()
    {
        if (Session["dtDesc"] == null)
        {
            Descriptiontable();
        }
        dtDesc = (DataTable)Session["dtDesc"];
        DataView dv = dtDesc.DefaultView;
        if (dv.Count == 0)
        {
            adddescription();
        }
        Rptdescription.DataSource = dv;
        Rptdescription.DataBind();
    }
//button click event
adddescription();

This is how im creating dynamic textboxes in repeater...
But how do i store viewstate of those textboxs on btnclick event...
so that values of text boxs may not dissappear on post back....

Where you are creating dynamic textboxes in this code?
Or you defined static html inside Repeater?

Arun Jacob
http://codepronet.blogspot.com/

yes ststic html defined..

<asp:Repeater ID="Rptdescription" OnItemCommand="Rptdescription_ItemCommand"   runat="server">
  <HeaderTemplate>
  
  </HeaderTemplate>
  <ItemTemplate>
  <tr style="width:100%">
  <td colspan=16>
     Description Name/Type & Source &nbsp;<asp:TextBox  CssClass="input" ID="TextName" Width="240px" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "DescriptionName") %>'></asp:TextBox>
     <!-- <asp:Label ID="TxtName" runat="server" Visible="false" Text='<%# DataBinder.Eval(Container.DataItem, "DescriptionName") %>'></asp:Label>
   --></td> <td colspan=8>  
   <!--<asp:Label ID="TxtDate" runat="server" Visible="false" Text='<%# DataBinder.Eval(Container.DataItem, "Date") %>'></asp:Label>
    -->Date &nbsp;<asp:TextBox ID="TextDate" runat="server" Text='<%# string.Format("{0:dd/MM/yyyy}",Eval("Date")) %>'></asp:TextBox>
       
        <cc1:CalendarExtender Format="dd/MM/yyyy"  ID="CalendarExtender1" runat="server"  TargetControlID="TextDate" PopupButtonID="ImageButton1"  >
        </cc1:CalendarExtender>
        <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/Images/Calendar_scheduleHS.png" ValidationGroup="false" />
       <br /> <asp:RegularExpressionValidator ID="RegularExpressionValidator14" runat="server" ValidationExpression="(0[1-9]|[12][0-9]|3[01])[- /.](0[1-9]|1[012])[- /.](19|20)\d\d" Display="Dynamic"  ControlToValidate="TextDate" ErrorMessage="Please Enter in dd/mm/yyyy format"></asp:RegularExpressionValidator>

    
       
     </td> 
     </tr>
     <tr style="width:100%">
     <td colspan=20 >
    <!--      <asp:Label ID="TxtDescription" Visible="false" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>'></asp:Label>
   --> <asp:TextBox  CssClass="input" ID="TextDescript" TextMode="MultiLine" Columns="70" Rows="5" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>'></asp:TextBox>
     </td>
     <td><asp:LinkButton ID="delete" CommandName="Delete" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "id") %>' ValidationGroup="false" runat="server">delete</asp:LinkButton></td>
     </tr>
  </ItemTemplate>
  <FooterTemplate>
  </FooterTemplate>
  </asp:Repeater>

Okay.Then before creating new row and binding it to repeater, you need to save the edited data in text boxes to some persisting object.

Arun Jacob
http://codepronet.blogspot.com/

iam using asp.net with c#.and sql server

table fields are

customername nvarchar
monitors decimal
printers decimal
scanners decimal

some times customers will take only printers , so at that time the textboxes is empty so while saving and updating it is giving errors

Input string was not in a correct format

please give example which helps me.

Why don't you trap for that. if your table field does not allow nulls then you cant insert a null.what you can do is to trap for that and have the reserved word that you will use if the textbox is empty.

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

Hi,
What kind og error it is giving can you give details here..

Thanks ,
Amit Patel

You should set a default value of 0 (zero) for the monitors, scanners and printers fields such that when you go to pass the data to the database all of the items have a valid value (zero should be a valid count for items denoting that whilst they may have 1 scanner, they have no printers or monitors).

me, me, me

"The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!"
Larry Niven

developerit wrote:

some times customers will take only printers , so at that time the textboxes is empty so while saving and updating it is giving errors

Input string was not in a correct format

Which line of code is causing the error?Can u paste that line of code here?

Arun Jacob
http://codepronet.blogspot.com/

printer.computer,scanner lines are giving error

try this
in your table set default value of printer, scanner.. parameter is 0

or use in code
if(txt_printer=="")
{
printer =0;
}
else
{
printer =txt_printer.Text;
}

same for scanner . & .........

If you are going to do it like that, do it this way:

int printer = (string.IsNullOrEmpty(txtPrinter.Text) ? 0 : Convert.ToInt32(txtPrinter.Text);

Apply the appropriate conversion to txtPrinter.Text.

me, me, me

"The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!"
Larry Niven

Dear All,
i have following code

function displayControlName(src,pText)
    {
        var msg2Display = document.getElementById('spMsg');
        msg2Display.innerHTML += '<input type = "button" value="'+src+'" onclick="return displayMsg(src,pText)"/><br>';
        return false;    
    }
    function displayMsg(src,pText) 
    {   
        alert(src + ' you are here');
        return false;
    }

I am looking to pass "src" and "pText" javascript variable to a function called "displayMsg", but I have tried different ways to pass the variables from first method "displayControlName" as i have tried
displayMsg(src,pText), displayMsg('+src+','+pText+') and a little more but none worked for me.

any ideas how to pass the variable name src and pText to the javascript function displayMsg from method displayControlName and I am trying to pass it in this statement onclick = "return displayMsg(src,pText)"?

Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan

this will be the correct way

displayMsg(src,pText);

and i see you have done it but the question is that these parameters have you declared them anywhere ? show u the part you tried to execute and show us where you declare the parameters to pass to the function.

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

those variables are as the function args and I am sending only text value to these args
as you see
the function requires two args

function displayControlName(src,pText)

and I am only printing that two variables passed to function.
here I am passing var to that function

menuLink.Attributes["onclick"] = "return displayControlName('" + item.Text + "','" + item.Parent.Text + "');";

both item.Text and item.Parent.Text are there but the

onclick="return displayMsg(src,pText);"

doesent work.

Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan

Look at Prakash , that is exactly what you need to do. your variables are not recognized, they are treated as string.

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

You are adding the input control in the spMsg control like following

msg2Display.innerHTML += '<input type = "button" value="'+src+'" onclick="return displayMsg(src,pText)"/><br>';

When the onclick event will be attached on the input button the “scr” will be unknown.

try this

 function displayControlName(src, pText) {
    var msg2Display = document.getElementById('spMsg');
    msg2Display.innerHTML += '<input type = "button" value="'
    + src + '" onclick="'
    + "return displayMsg('"
    + src + "','"
    + pText + "')"
    + '"/><br>';
    return false;
}

WWW, WCF, WWF, WPF, WFC .... WTF

thanks, your print the following but no event is attached with the button
ButtonpTextValue')"/>

Button mean the HTML control button and pTextValue mean the value which is in the pText Variable
it means it prints one button control with other text in the screen while no event is attached with the button control.

Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan