ASP.NET

minhpc_bk17-Jun-06 20:48

minhpc_bk

17-Jun-06 20:48

You can create a handler for the RowDataBound event of the GridView control, and in the handler you can get reference to the DetailsView control, then you can pass the CustomerID value from the master record to the input controls placed inside the DetailsView control.

kmeyer19-Jun-06 0:42

kmeyer

19-Jun-06 0:42

Thankyou for the reply, it would seem from the number of posts on various ASP.NET forums I am not alone. I am not alone, I will explore the RowDataBound event as a means to capture the values in the GridView (CustomerID & Name)

I thought this was going to be easy, hooking up a Gridview and DetailsView for some standard Master/Detail data entry.

For anyone reading this post if you can recommend a good book that focuses on C# ASP.NET database front ends I would appreciate knowing its name. I have already purchased 3 books reviewed on the Microsoft site, one is over 1000 pages only find very little on hooking up these two controls in a real world examples.

I have both forms linked and working well when details data exists. I also have the DetailsView defaulting to Insert by using the following useful code snippet I found on another post, when there is no detail record.

protected void SqlDataSource2_Selected(object sender, SqlDataSourceStatusEventArgs e)
{
if (e.AffectedRows < 1)
{
DetailsView1.ChangeMode(DetailsViewMode.Insert);
}
}

Its at this point I want to populate the CustomerId & Name values from the selected Master record into the empty DetailsView record which is on a different page.
Many smaller examples show both controls on the same page.

I have tried the following from a post by Polita Paulas the creator of the GridView, DetailsView and FormView controls.

"The best way to do this is to handle the DataBound event, check if the Mode is Insert, then set the text in the controls to the default properties.
For instance:
protected void DetailsView1_DataBound(object sender, EventArgs e)
{
if (DetailsView1.CurrentMode == DetailsViewMode.Insert)
{
((TextBox)DetailsView1.Rows[0].Cells[1].Controls[0]).Text = "Default";
}
}
"
I have tried this with test data and cannot seem to get it to work, the Cell always remains empty, no errors are thrown.

A number of posts suggest you must use template fields, like the following post, I could not get this to work either.

protected void DetailsView1_DataBound(object sender, EventArgs e)
{
if (DetailsView1.CurrentMode == DetailsViewMode.Insert)
{
TextBox tb = (TextBox)DetailsView1.FindControl("TextBox1");
tb.Text = DateTime.Now.ToShortDateString();
}
}

I am thinking this must be so easy and thats why my posts on this site and another go vertually unanswered or its too hard and no one really knows.

minhpc_bk19-Jun-06 16:40

minhpc_bk

19-Jun-06 16:40

If the Creator said the DataBound event is the best way, then it should be be your choice Smile | :)

. There are a couple of things things that you might want to check:

+ Make sure the execution gets in the body of the if statement in the DetailsView1_DataBound event handler, I just want to ensure that your code does assign the default value to the input textbox.

+ Make sure you get reference to the right input textbox to set the default value. For example, make sure you do not assign a value to the input textbox of the BoundField or TemplateField with the InsertVisible property is set to false.

+ Make sure the Text property of the input textbox is not overwritten somewhere else.

Basically, when you get reference to the textbox with the DefailsView is in the Insert mode, you'll have 2 common options:

+ Use the rowindex and cellindex values, for example when you use the BoundField in the DetailsView control.

+ Use the FindControl method, and you use this way when define a TemplateField in the DetailsView control.

Perhaps, if you still cannot figure out the root cause, you might want to post your code snippets, that might help. In addition, I don't know off any book containing lots of examples about the GridView, DetailsView controls, but you may find online from the sites:

http://www.gridviewgirl.com[^]
http://www.gridviewguy.com/[^]

kmeyer19-Jun-06 20:35

kmeyer

19-Jun-06 20:35

Thankyou for your patience, I will keep chipping away at it and take on board your suggestions. I have been trolling the Net on and off for a couple weeks and am pleased I am not the only one in this prediciment. Both the Gridviewguy and Gridviewgirl sites are good and I have seen posts from Gridviewguy assisting on forums but unless I missed something I could not see an example of what I am doing.

Scott Mitchell (www.4guysfromrolla.com) also has contributed some good examples to the Microsoft MSDN site at the following link.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspp/html/GridViewEx.asp

Scott has also contributed a number of good articles for Microsoft under learn at
www.asp.net

There are 13 articles with more coming and can they be downloaded as PDF files

At the moment I am compiling eveything I have trolled up and will go through it again in case I have missed something. I am trying to teach myself C# ASP.NET whilst building an in house application. My previous backgroud dates back to the xbase dos pre Windows days and then some early db work in Delphi and object pascal, so I am starting from scratch.
Thanks Again
Kim

Email validation

Uma Kameswari15-Jun-06 18:48

Uma Kameswari

15-Jun-06 18:48

How to perform email validaiton for windows applicaions in .net

Suamal15-Jun-06 19:10

Suamal

15-Jun-06 19:10

Try this.
I think it will help you.

using System.Text.RegularExpressions;

public static bool CheckEmailAddress(string strText)
{
//Validates the Email address
string strPattern = @"^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@(([0-9a-zA-Z])+([-\w]*[0-9a-zA-Z])*\.)+[a-zA-Z]{2,9})$";
return CheckRegExPattern(strPattern, strText.Trim());
}

public static bool CheckRegExPattern(string strPattern, string strText)
{
return Regex.IsMatch(strText.Trim(), strPattern);
}

Uma Kameswari15-Jun-06 19:52

Uma Kameswari

15-Jun-06 19:52

HI Suamal,
Thnak u for the help.It worked out.
bye
Uma

psid2315-Jun-06 19:22

psid23

15-Jun-06 19:22

You can also try this piece of code.
Assumptions:
1. Your Windows form has a text box with the name txtEmailID
2. You have using System.Text.RegularExpressions at the top of your form.
3. Call the ValidateEmail function in the event where you want to validate the email id.
private bool ValidateEmail()
{
bool checkFlag = false;
string EmailID = txtEmailID.Text.Trim();
if (EmailID != "")
{
Regex regex = new Regex(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");
Match match = regex.Match(EmailID);
if (match.Length == EmailID.Length)
{
checkFlag = true;
}
else
{
MessageBox.Show("Enter a valid email-id");
checkFlag = false;
txtEmailID.Focus();
}
}
else
{
MessageBox.Show("Enter Email ID");
txtEmailID.Focus();
}
return checkFlag;
}

All the best.
Siddharth P Smile | :)

Uma Kameswari15-Jun-06 20:01

Uma Kameswari

15-Jun-06 20:01

Hi Siddharth P,
Thank u for the help.
Uma

.net

surshbabuk15-Jun-06 18:19

15-Jun-06 18:19

what about this tell me clear

suresh babu.k

surshbabuk15-Jun-06 18:20

15-Jun-06 18:20

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suresh babu.k

surshbabuk15-Jun-06 18:22

15-Jun-06 18:22

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suresh babu.k

surshbabuk15-Jun-06 18:21

15-Jun-06 18:21

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suresh babu.k

surshbabuk15-Jun-06 18:22

15-Jun-06 18:22

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suresh babu.k