Develop Reference

DataGrid Web Forms EditCommand/UpdateCommand. How to get changed value in TextBox

I've got a problem with my DataGrid's Edit command.
Here's my DataGrid:
http://imgur.com/0nmDJX0
and now i would like to edit my Title:
http://imgur.com/VU20GNa
How can i get the "abc" value?
((TextBox) e.Item.Cells[0].Controls[0]).Text still gives me the old value "sdfsd".
How can i get that "abc" value from textbox? I store my records to XML so all i need is to get these edited values.
Thanks.

Make sure you are not binding your data on every page load. If you do that, your new values are reloaded with old values before your event handler runs.
In my case, I just needed to put the BindData() inside the if (!Page.IsPostBack) block
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindData();
}
}

Checkboxlist loop is not working

I have a dropdownlist control and a button in asp.net page. The dropdownlist is populated from a method. If I select any item other than the first item, after clicking the button, I lose the selected item in the DDL and it selects the first item and also I am getting the value of the first item only in the button click event. How can I fix the problem?
<asp:DropDownList ID="userDropDown" runat="server" DataTextField="CustomerName" DataValueField="CustomerId">
</asp:DropDownList>
protected void Button1_Click(object sender, EventArgs e)
{
if(!page.isPostBack)
{
userDropDown.DataSource = CC.GetCustomers();
userDropDown.DataBind();
}
}

i think you must have bind userDropDown in Page_Load event without condition
if (!IsPostBack)
Please put dropdown binding part inside if (!IsPostBack) condition then it should work

Please bind dropdownlist values inside the if(!ispostback){} or
after submitting button please bind updated field to dropdownlistname.text

It sounds like you are binding your DropdownList to your datasource at ever request. Instead bind it only if Page.IsPostBack is false like below; (You may not need ObjectDataSource)
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//bind your datasource here (something like below)
userDropDown.DataSource = GetCustomers();
userDropDown.DataBind();
}
}
As soon as DataBind() method is called it will lose posted data of that object and the FirstItem will be selected by default.

How do I Grab Selected Index on two Dropdownlist's OnSelectedIndexChanged?

I am trying to use two DropDownLists to filter data. I set both of the OnSelectedIndexChanged Equal to the method below. The problem is it is only grabbing the SelectedIndex of the DDL that is changed. Example: if i choose a option in DDL1 it grabs that value and doesnt grab the value of DDL2. They both have the same OnSelectedIndexChanged i figured it would grab the current value of both. Is there a way to make it look at both DDL Controls?
protected void BrandsList_SelectedIndexChanged(object sender, EventArgs e)
{
int DDLcatId = CategoriesList.SelectedIndex;
int DDLBraId = BrandsList.SelectedIndex;
IQueryable<Product> DDLprodResult = GetProductsDDL(DDLcatId, DDLBraId);
if(DDLprodResult == null)
{
}
else
{
CatLab.Text = DDLprodResult.ToList().Count().ToString();
productList.DataSource = DDLprodResult.ToList();
productList.DataBind();
}
}

Your code should work. Of course only one can be changed if you have set AutoPostBack="true"(default is false) on both. But you should get the correct SelectedIndex anyway in the handler.
So i will guess: you are databinding the DropDownLists on every postback. Do this only if(!IsPostBack), otherwise you always overwrite changes with the original values.
So for example in Page_Load:
protected void Page_Load(Object sender, EvengtArgs e)
{
if(!IsPostBack)
{
// DataBind your DropDownLists
}
}

HtmlInputCheckBox in Repeater always not checked

i'm using a HtmlInputCheckBox in a repeater by adding
<input id="CheckBox1" type="checkbox" runat="server" value='<%# Eval ("userid") %>' />
to repeater->ItemTemplate->table->tr->td and in the server side i'm using
protected void Button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < UserRepeater.Items.Count; i++)
{
var chkBox = UserRepeater.Items[i].FindControl("CheckBox1") as HtmlInputCheckBox;
if (chkBox != null && chkBox.Checked)
{
//
}
}
}
i'm not programatically setting any checkbox to set - i'm checking them on the web page during test.
my var checkbox is always inchecked {Value = "1,2,3,4" Checked = false}, thx for helping me with that.

How are you populating your repeater - if you are doing it in page_load make sure it is protected for postbacks:
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
// populate your data
}
}
EDIT
This is assuming you are working with viewstate on - which is the case by default.

This may be to do with when you bind your repeater. If you are binding on Page_Load, the check boxes will be created after viewstate and post variables have been restored, so the value won't be on your checkboxes.
If possible, move the data bind to Page_Init; as this happens before viewstate/post values are restored your checkboxes will get the right values assigned. If you can't bind on Page_Init, then #Aristos's answer will do.

selected index of DDL is always equal to Zero in asp .net

I have a Program Class, with properties as Id, ProgramName,ShortName and Code, im my app
I have a ASP DDL like
<asp:DropDownList ID="DDLProgram" runat="server"
OnSelectedIndexChanged ="OnDDLProgramChanged" AutoPostBack = "true">
</asp:DropDownList>
My OnDDLProgramChanged method is defined as
protected void OnDDLProgramChanged(object sender, EventArgs e)
{
List<CcProgramEntity> programEntities = GetAllPrograms();
DDLProgram.DataSource = programEntities;
DDLProgram.DataTextField = "Shortname";
DDLProgram.DataValueField = "Id";
//My Problem goes here
string programCode = programEntities[DDLProgram.SelectedIndex].Code;
}
My list is getting all the records correctly, I have checked it. But whenever I am changing an item in the DDL, the selected index in not changing. The selected index is remaining zero.Therefore, I am not being able to get the code of other items but the 0 index's item.
Can anyone help me in this case?

You are binding the data again in your selectedIndex Change event and it will reset your current SelectedIndex after rebinding. You don't need to rebind the data to your dropdown in SelectedIndex Change Event
It should be like..
protected void OnDDLProgramChanged(object sender, EventArgs e)
{
string programCode = programEntities[DDLProgram.SelectedIndex].Code;
}

You have to bind data to the DropDownList on page load method
if (!IsPostBack)
{
DDLProgram.DataSource = programEntities;
DDLProgram.DataTextField = "Shortname";
DDLProgram.DataValueField = "Id";
DDLProgram.DataBind();
}
Otherwise it will bind data everytime and hence clear the selection

Why are you assigning the DataSource in OnDDLProgramChanged, this would be resetting the selection you make.