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 _
Select New With {p.name p.category, p.count}
postlist.DataSource = prod
postlist.DataBind()

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Forms Data Controls :: Gridview RowDataBound Event Fires On Every Command Event?

Jul 19, 2010

why the gridview RowDataBound event fires during a select command. I only expect it to run when the gridview is being populated with data. Is there some way to stop it from running when the select command is triggered?

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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"
runat="server"
OnRowDataBound="grdMain_RowDataBound"

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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 :: 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();
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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.

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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);
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List<RetiredEmployeeEO> employees = new List<RetiredEmployeeEO>();
foreach (RetiredEmployee employee in employeeList)
{
RetiredEmployeeEO employeeEO = new RetiredEmployeeEO();
employeeEO.MapEntityToProperties(employee);
employees.Add(employeeEO);
}
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cgvEmployees1.LoadMethodName = "LoadFromQuery";
cgvEmployees1.LoadMethodParameters.Clear();
cgvEmployees1.LoadMethodParameters.Add(employees);
cgvEmployees1.DataBind();
}
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{
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)
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//Add checkbox to display the isactive field.
CheckBox chkActive = new CheckBox();
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else
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else
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if (((RetiredEmployeeEO)e.Row.DataItem).dayRetired.Equals("1753-01-01"))
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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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Feb 5, 2010

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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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[Code]....

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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

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I have a page on which everything is loaded dynamically.

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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:

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Is there a possibility to get:

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Data Controls :: Access DataTable Row In GridView RowDataBound Event

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I know the way how to find the value of a control in gridview RowDataBound()

as 

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as

var value=eval("Field")

Is there any way doing like this ....

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Dec 4, 2013

I have a Master/Slave GrisViews or some say Parent/Child GridViews.

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i try this: 

Protected Sub gv_child_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
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e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='';")
Dim lblitemid As Label = CType(e.Row.Cells(1).Controls(1), Label)
Dim lblphoto As Label = CType(e.Row.Cells(11).Controls(1), Label)

[Code]......

but it does not working. the button is still there.

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Data Controls :: Hide GridView Rows Conditionally In RowDataBound Event

Jul 30, 2013

On Row databound i want to show some rows in If and Hide in some rows in else conditon. But it generate an exception that (Index was out of range. Must be non-negative and less than the size of the collection Parameter name: index.

protected void gvHotels_RowDataBound(object sender, GridViewRowEventArgs e)
{
DataTable dt = new DataTable();
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[code]...

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Data Controls :: Call GridView RowDataBound Event On Button Click

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I have a gridview, I would like to call an event gridview rowdatabound on button click, but in gridview are edittemplate that uses textbox.

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here's my code

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) {
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[CODE]

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Feb 17, 2014

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while (Global.reader.Read())
{
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{
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[Code] .....

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Mar 11, 2010

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[Code]....

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[Code]....

Here is the ParentGrid with ChildGrid

[Code]....

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Feb 2, 2010

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{
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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 ..

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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:

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