ASP.NET

10-Jun-07 23:49

Hi everyone,

My application is something like this.....

I have a TextBox and a Button in my Start Page.
When I click the button TextBox text is assigned to ViewState and the page should redirect to the next page.
In the second page I have a Button to redirect the page to the Start Page.

When I am doing so,I am not getting the text which I entered previously as I used ViewState.

My code is
Page 1:

protected void Page_Load(object sender, EventArgs e)
{
if (ViewState["Name"] != null)
{
txtName.Text = ViewState["Name"].ToString();
}
}
protected void btnEnter_Click(object sender, EventArgs e)
{
ViewState["Name"] = txtName.Text;
Response.Redirect("ViewState2.aspx");
}

Page 2:

protected void btnPrev_Click(object sender, EventArgs e)
{
Response.Redirect("ViewState1.aspx");
}

Help me in this regard.

Thank u
Chandu

Jay_se11-Jun-07 0:04

11-Jun-07 0:04

Hi,

K V S Chand wrote:
I am not getting the text which I entered previously as I used ViewState.

Yes, You could not get it. B'cos ViewState simply keeps the values between the page postback.

Regards,

Jay Smile | :)

chand1011-Jun-07 0:24

11-Jun-07 0:24

Thank u.

What u said is right.

My doubt is, if u r developing an application on registration form,where u have many fields to enter.
After filling all the fields you will press Submit or whatever, then the page will PostBack and Insert all the fields into the DataBase.
In this context, if you abserve all the text u entered in the TextBoxes will be their even after the PostBack except RadioButtons,CheckBoxes etc, untill and unless you clear it programatically.

Then what is the need of this ViewState as the Values are unchanged after the PostBack also.

Thank u
Chandu

Jay_se11-Jun-07 0:36

11-Jun-07 0:36

Chandu,

K V S Chand wrote:
all the text u entered in the TextBoxes will be their even after the PostBack

Yes, it is TRUE. B'cos that control has the Property called 'EnableViewState'; By default it has set to True. So the control itself saves its 'control information' in viewstate. (NOT explicitly required by you). Have you got it?

Regards,

Jay Smile | :)

chand1011-Jun-07 0:55

11-Jun-07 0:55

Thank u.

Even after I set EnableViewState to False to the TextBox, the text remained same.

What the reason for this?

If I want all the values which I have enter in the Page1 after I moved to a couple of pages and then returned to the Page1, how I can I make it.

Thank u
Chandu

chand1011-Jun-07 0:56

11-Jun-07 0:56

Thank u
Chandu

Jay_se11-Jun-07 1:10

11-Jun-07 1:10

Try use Session, instead of ViewState (Or) Pass the textbox Value in URL (Or) PreviousPage.FindControl()

(eg) Session["Value"]=txtbox.Text;

Regards,

Jay Smile | :)

chand1011-Jun-07 1:54

11-Jun-07 1:54

Yah! I got it.

Thank u
Chandu

How 2 bring a asp:BoundField DataField="someField" to a javascript function

Christian Graus11-Jun-07 0:40

Christian Graus

11-Jun-07 0:40

You can use cross page postback to do this in ASP.NET 2.0, otherwise, the viewstate contains only the state of controls that are on that page and have viewstate turned on.

Use the session or the URL to pass stuff between pages otherwise.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Herman<T>.Instance10-Jun-07 23:47

Herman<T>.Instance

10-Jun-07 23:47

To get a better idear which line in a datagrid will be removed I want to add some data from a gridviewrow to a javascript function

The function is is called CollectData(Person)
{
..... some code
return concatenated_string;
}

In the gridview I want to run the javascript in the OnClientClick event
onClientClick="javascript: return comfirm(CollectData(whatshouldcomehere))"

How can I use the <%#DataBinder.Eval(Container.DataItem, "Person")%> on the whatshouldcomehere spot?

Re: How 2 bring a asp:BoundField DataField="someField" to a javascript function

Harini N K11-Jun-07 0:25

Harini N K

11-Jun-07 0:25

Hi
1. For calling javascript for an onClick event, you should write code in ItemDataBound event of datagrid as shown below:

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)<br />
{<br />
	String strJavascript = "";<br />
	strJavascript = "alert('" + e.Item.Cells[0].Text.ToString() + "')";<br />
	e.Item.Attributes.Add("Onclick",strJavascript);<br />
}

2. If your bound column 'Person' is at column 2 in the datagrid, then pass e.Item.Cells[1].Text.ToString() as an index starts from 0.

Hope you got it.

Harini

Re: How 2 bring a asp:BoundField DataField="someField" to a javascript function

Herman<T>.Instance11-Jun-07 0:43

Herman<T>.Instance

11-Jun-07 0:43

Thank you. This works nice.

Check box..................

HemMagesh10-Jun-07 23:36

HemMagesh

10-Jun-07 23:36

Hi we can get the values in textbox using textbox.text...,
But same if its in checkbox how to store the value?,
Means if its in checked condition want to store 1 like...,
If its not checked want to store 0 like,
How to do that...,

All sorrows will be forget...,When u think ur most lovable one...,
Mag,

Harini N K10-Jun-07 23:47

Harini N K

10-Jun-07 23:47

Hi
CheckboxFieldName.Checked will give true if it is checked otherwise false.

Harini

HemMagesh11-Jun-07 0:04

HemMagesh

11-Jun-07 0:04

No actually i am asking is some thing differ...,
See we can get the values from textbox using textbox.text..,
Using this we can store the values to our table...,
Like that,if checkbox is checked condition,
then want to send 1 value to table...,
Otherwise 0 wnt to send...,
Here i can say if check box is in checked condition i can send flag...,
But i need with out using any flag, we can send the value to our table?,

All sorrows will be forget...,When u think ur most lovable one...,
Mag,

Harini N K11-Jun-07 0:11

Harini N K

11-Jun-07 0:11

Hi
Ok then try this

Response.Write(CheckBox1.Checked == true ? "1" : "0");

Harini

chand1011-Jun-07 0:06

11-Jun-07 0:06

You can implement in this way.....

int value;
if(chkBox_Name.checked == true)
{
value=1;
}
else
{
value=0;
}

Cheers
Chandu

dropdownlist doubt

saravanan0510-Jun-07 23:09

saravanan05

10-Jun-07 23:09

hi friends

I have three dropdownlist
1.date
2.month
3.year

using <asp:listiltem>i give the date,month,year value in Html

i want to all three store database column DATEOFBIRTH like this(1/1/2007)

can u help me

regards
saravanan

Re: dropdownlist doubt

Jay_se10-Jun-07 23:29

10-Jun-07 23:29

Hi,

You can use the below user defined function to convert your inputs into DateTime object.
Here, _ex = AM/PM.

public DateTime DateTimeConvertor(string _date, string _hrs, string _min, string _ex)
{
StringBuilder strDateTime=new StringBuilder();
DateTime dt = new DateTime();

strDateTime.Append(_date).Append(" ").Append(_hrs).Append(":").Append(_min).Append(":").Append("00").Append(" ").Append(_ex);

dt = Convert.ToDateTime(strDateTime.ToString());

return dt;
}

Regards,

Jay Smile | :)

Re: dropdownlist doubt

wEb GuRu...10-Jun-07 23:29

wEb GuRu...

10-Jun-07 23:29

In fact you just need to concat values from three dropdownlist to form a correct date. Is it all about your question...?

All the way from Sialkot ...

Re: dropdownlist doubt

chand1010-Jun-07 23:34