Forms Data Controls :: How To Calculate Field In RowDataBound Event

Oct 26, 2010

I have a databound gridview in which i have added a template field to display a calcultion. I have created a rowdatabound event in which I want to perform a calculation, but don't know how. The calculation is as follows:

First, it should take the sum of all the payments made by a given customer. It then should divide this value by a daily membership rate, returning a days paid variable. Finally, it should add that variable to the customer since field and calculate the date that the customer is paid through.

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Forms Data Controls :: Changing Row Color In Grid View Based On A Boolean Field Using Rowdatabound Event

Aug 4, 2010

I know that variations of this same question have been posed numerous times - but I can't quite seem to find the exact solution.

I would like any row in my gridview where the boolean field "Approved" is True to be shaded gray. Here is the code that I'm using, but every row ends up being gray, regardless of the value in that "Approved" field. My guess is that I'm not correctly evaluating the boolean value in this field (which is actually a yes/no field in MS Access), Not sure if I should be reading that value as "-1", "Yes" or "True" or "NotNull"? Anyway, here is the code:

[code]....

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Forms Data Controls :: RowDataBound Event Calculations-sum(field) Where ClientID=@clientID; Date + Int = Date?

Oct 26, 2010

I have a databound gridview that displays basic customer information. I have added a template field to the gridview, but I am having trouble with the coding for the RowDataBound event. I need to take the sum of all payments made by the customer in each row and store it in a variable for further calculation. Also, I need to take an integer value (say 30, representing 30 days) and add it to a date, and return a date.

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Forms Data Controls :: Formatting Template Field During RowDataBound

Mar 10, 2010

I ran into this problem I'm sure someone else has similar encounter with, but just couldn't find a solution for it!

I want to disable few entries in the dropdownlist that's in the template field, depending on the value in BoundField when the gridview is being populated.

Below is my attempt:

[Code]....

JobStatus is the dropdownlist in the template field, and Status is the boundfield. In run time, the bolded line causes below exception: Object reference not set to an instance of an object. which I think is wingeing about null variable. Perhaps the templatefields are created after RowDataBound event?

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Forms Data Controls :: How To Change SelectText Of Command Field During RowDataBound

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I am developing an application with custom localization feature. Every text in controls is replaced with localized contents. I am currently facing problem in convering Gridview command fields. Is there any way to change the text of command field during RowDataBound?? I mean

[Code]....

[Code]....

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Forms Data Controls :: Get Row Backcolor In RowDataBound Event?

Feb 2, 2010

I want to get the gridview row back color in the rowdatabound event,

I tried as follows

if (e.Row.BackColor.Name.ToString() == "Red")
{
}

but always i'm not getting any value in the e.Row.BackColor..

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Forms Data Controls :: RowDataBound Event Of Gridview Not Firing

Feb 17, 2010

protected void grdMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
}
<asp:GridView ID="grdMain"
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rowdatabound event is not firing during postback ,What to do?First time pageload I am getting result as expected. When I click checkbox ,which is in grid ,my values which are in other columns get disappeared, that means during postback. How to maintain values in the grid even after postback.note : I did some small manupulation of data during rowdatabound event for the columns which are in the grid.

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Forms Data Controls :: Change Particular Row Color / CSS On RowDataBound Event Using C#

Jan 15, 2011

i have a gird and i want to change particular row color when i found such particular row on row data bound ..

for example when i found a text from "lblRowId" than how can i change current row color or css[Code]..

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Forms Data Controls :: Gridview RowDataBound Event - Set Default Value

May 17, 2010

When a Gridview row is in edit, I need to default an empty textbox to today's date. I am close, but the defaulted date is is not saved to the database. I can key in the date and the date is displayed and saved to the database. Even more interesting:

1. The date is defaulted to - 5/17/2010
2. If I erase the month and key the "5" back in the data is not saved.
3. If I erase the month and then change the month to "6", the data is saved to the database. If any value is changed in the date the save works.

[Code]....

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Forms Data Controls :: Can't Change Forecolor In RowDataBound Event

May 27, 2010

I need to change the text style of a row based on whether or not it has a particular flag set in my database. I can change some attributes, but not all.

[Code]....

More specifically, e.Row.ForeColor changes the text color of the Edit link, but not any of the text retrieved from my database.

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Forms Data Controls :: Cannot Linq In Gridview RowDataBound Event

Mar 16, 2010

I use linq query as below and bind it to listview. I have 2 label control (name,remain).I want to check in code behind if p.count<200 then remain ="Sample text1"if price <300 then "sample text2".I know that I could do it before linq in gridview RowDataBound event

Dim prod= From p In db.products _
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Forms Data Controls :: Get The DataKey Value In RowDataBound Event For GridView?

Feb 22, 2010

How to get the DataKey value in RowDataBound event for GridView

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Forms Data Controls :: GridView's RowDataBound Event Fired Twice?

Apr 20, 2010

I have a very simple asp.net page, just some buttons and one GridView on it. The logic is a user click the QUery button,then the button click event was trigured to populate the gridview with data queried from database via LINQ. for a user friendly interface, in RowDataBound event, I visit every row, change a boolean value into checkbox represention. But it seem that the RowDataBound run twice, because the checkboxs were inserted twice for every row in one cell. so why? the source code snippet as follow:

protected void btnSelect_Click(object sender, EventArgs e)
{
RetiredEmployeeDataContext db = new RetiredEmployeeDataContext();
GridView1.DataSource = db.ENTUserAccountSelectAll();//userAccounts;
GridView1.DataBind();
}
protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox chkActive = new CheckBox();
chkActive.Checked = ((ENTUserAccount)e.Row.DataItem).IsActive;
chkActive.Enabled = false;
e.Row.Cells[5].Controls.Add(chkActive);
}
}

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Forms Data Controls :: How To Format E.Row.DataItem In RowDataBound Event Of GridView Using C#

Mar 3, 2010

I am NOT formatting at DECLARATIVE time

The following code works perfectly

[Code]....

Can I directly format e.RowDataItem.

I don't want to format by using e.Row.Cells[4].Text

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Forms Data Controls :: Why Wasn't GridView's RowDataBound Event Fired

Apr 21, 2010

Why wasn't my GridView's RowDataBound event fired? I have a masterpage on whick i have a query button, and I have a content page on which i have a customized GridView(named cgvEmployees,derived from GridView). The logic is when user click the button, the button click event triggered that search the underlying database and populate the GridView.

Everything runs great except that RowDataBound event isn't triggered. Because I have to change some cells' representations in RowDataBound event handler. I have surfed so much pages to find the answer but failed. Below is what i have already done:

1. set the autoeventwireup to true;
2. i have a cgvEmployees.bind() sentence in the button click event handler;
3. i have OnRowDataBound="cgvEmployees_OnRowDataBound" in the content page GridView tag attribute

by the way, the database query is coded by Linq Dynamic Query (please google 'dynamic Linq').

void Master_QueryButton_Click(object sender, EventArgs e)
{
RetiredEmployeeDataContext db = new RetiredEmployeeDataContext();
NameValueCollection nvcQueryKeyValue = getNVCQueryKeyValue();
Expression<Func<RetiredEmployee, bool>> searchPredicate = getLambdaExpr(nvcQueryKeyValue);
IQueryable<RetiredEmployee> retireds = db.RetiredEmployees;
Expression expr = Expression.Call(typeof(Queryable), "Where",
new Type[] { typeof(RetiredEmployee) }, Expression.Constant(retireds), searchPredicate);
IQueryable<RetiredEmployee> query = db.RetiredEmployees.AsQueryable().Provider.CreateQuery<RetiredEmployee>(expr);
List<RetiredEmployee> employeeList = new List<RetiredEmployee>(query);
List<RetiredEmployeeEO> employees = new List<RetiredEmployeeEO>();
foreach (RetiredEmployee employee in employeeList)
{
RetiredEmployeeEO employeeEO = new RetiredEmployeeEO();
employeeEO.MapEntityToProperties(employee);
employees.Add(employeeEO);
}
cgvEmployees1.ListClassName = typeof(RetiredEmployeeEOList).AssemblyQualifiedName;
cgvEmployees1.LoadMethodName = "LoadFromQuery";
cgvEmployees1.LoadMethodParameters.Clear();
cgvEmployees1.LoadMethodParameters.Add(employees);
cgvEmployees1.DataBind();
}
protected void cgvEmployees1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Add the edit link to the action column.
HyperLink editLink = new HyperLink();
if (((BasePage)this.Page).ReadOnly)
{
editLink.Text = "View";
}
else
{
editLink.Text = "Edit";
}
editLink.NavigateUrl = "employee.aspx" + EncryptQueryString("id=" + ((RetiredEmployeeEO)e.Row.DataItem).ID.ToString());
if(e.Row.Cells[0].Controls.Count==0)
e.Row.Cells[0].Controls.Add(editLink);
//Add checkbox to display the isactive field.
CheckBox chkActive = new CheckBox();
chkActive.Checked = ((RetiredEmployeeEO)e.Row.DataItem).liveOrDead;
chkActive.Enabled = false;
if(e.Row.Cells[24].Controls.Count==0)
e.Row.Cells[24].Controls.Add(chkActive);
if (((RetiredEmployeeEO)e.Row.DataItem).gender.Equals((byte)1))
e.Row.Cells[2].Text = "Male";
else
e.Row.Cells[2].Text = "Female";
if (((RetiredEmployeeEO)e.Row.DataItem).retiredOr.Equals((byte)1))
e.Row.Cells[14].Text = "Retired1";
else
e.Row.Cells[14].Text = "Retired2";
if (((RetiredEmployeeEO)e.Row.DataItem).birthday.Equals("1753-01-01"))
e.Row.Cells[3].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayToEmployed.Equals("1753-01-01"))
e.Row.Cells[6].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayRetired.Equals("1753-01-01"))
e.Row.Cells[7].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayParty.Equals("1753-01-01"))
e.Row.Cells[13].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).daytoassign.Equals("1753-01-01"))
e.Row.Cells[17].Text = "";
}
}

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Forms Data Controls :: Access GridView PageIndex In Rowdatabound Event?

Feb 5, 2010

How do I access GridView Page Index in RowDataBound event? I am assigning PageIndex to hyperlink on the gridview, for this I was planning to use "GridView1.PageIndex" in rowdatabound event. Problem is when I got second page in gridview (10 rows per page), the first row in the page shows page index as "0" and from second row it becomes 1. And if I goto third page, the first row in the page shows page index as "1" and from second row it becomes 2.

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Forms Data Controls :: Rowdatabound Event Of A Gridview Loses Its Value While Editing?

Feb 5, 2011

I have a Gridview with edit and update feature enabled. It displays the data correctly but when I click on the Edit linkbutton(to edit the data), I get the error "Object reference not set to an instance of an object".

I tried debugging and found that the row which I click (say editindex is 1) loses its value. I could identify this while debugging the code, when the code flow moves to the rowdatabound event, the label (or for that matter any control in the rowdatabound event) shows a null value and eventually errors out.

I am unable to figure out as to why the control specified in the rowdatabound event loses its value when editing. Note: The lost valueow data is the one which I tried editing.

I am attaching the code which I have written for the rowdatabound event.

[Code]....

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Forms Data Controls :: Gridview Template Field Calculate In JavaScript?

Mar 11, 2011

I have following codebehind in ASPx - VB.Net in my aspx project, i want sum a template column (txtAmount) to show another TXSum template (without any postback) any one give me a better soluation in javascript.

My Code:

[code]....

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Forms Data Controls :: Calling A Javascript Function In RowDatabound Event Of The Gridview?

Feb 4, 2010

Can I call a javascript function in the RowDatabound event of the Gridview?

I am currently enabling/disabling buttons in each of my gridview rows based on a status value from the database.I need to fire a javascript function (say alert('current status')) when the status is 0,else dont fire that function.Can I achieve this in the row databound event?

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Forms Data Controls :: Gridview Status Column Data Bind In RowDataBound Event

Mar 7, 2010

I have database status field Bit(0/1) this values binding to gridview column. i want to show record status instead of 0 and 1 display open or close

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Forms Data Controls :: Add Duration Total In Gridview Foot Using Timespan And Rowdatabound Event

Dec 19, 2010

I want to have a total in the gridview footer of the duration of the employees. As the rowdatabound goes through the cycles I can see it reading the correct times from each row but it is not totalling in totalTime and I get 0:00:00 in the footer.

[Code]....

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Data Controls :: RowDataBound Event In GridView

Aug 18, 2015

How to generate "Gridview1.row_bound" event in gridview?

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Forms Data Controls :: Gridview / Adding CheckBox In RowDataBound - CheckedChanged Event Not Fired - Page Lifecycle

Jan 5, 2011

I have a page on which everything is loaded dynamically.

There is a Gridview (AutoGenerateColumns=true) and in the RowDataBound I check every column for a boolean datatype. If found I add a checkbox (autopostback=true) to the cell and register the CheckedChanged event.
The problem is, that I only get the CheckedChanged event, if I reload the grid in Page_Load:

protected void Page_Load(object sender, EventArgs e) {
LoadGrid();
}

But this is very expensive and causes that the db request will be executed twice. If I changed the code to what I want:

protected void Page_Load(object sender, EventArgs e) {
if (!this.IsPostBack)
loadGrid();
}

I get no CheckedChanged event.

Is there a possibility to get:

- Adding a Checkbox in RowDataBound
- Only "LoadGrid()" if it is no PostBack
- Getting the CheckedChanged event of the relevant row

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