Accessing gridview's header controls in ASP.Net, C#

Question

I have Gridview and the headers are having textboxs and labels, I have a search button out side of the gridview and when a user clicks on search I need to filter gridview's data by respective column's texbox values.

'GridView' as in ASP.NET web forms or any other third party gridview? (I see you have tagged asp.net-mvc in your question) — Prashanth Thurairatnam
– Prashanth Thurairatnam, Commented Jun 8, 2012 at 2:22

Prashanth Thurairatnam · Accepted Answer · 2012-06-08 03:23:38Z

2

Try this

TextBox textBox = (TextBox)gridView1.HeaderRow.FindControl("contorlId");

to specifically search within a column identify the cell by the index

TextBox textBox = (TextBox)gridView1.HeaderRow.Cells[0].FindControl("contorlId");

answered Jun 8, 2012 at 3:23

Prashanth Thurairatnam

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6 Comments

vml19 Over a year ago

textbox is always null. any idea?

vml19 Over a year ago

Actually I am creating Textbox dynamically and text box Id in runtime is 'ctl00_sys_ABC_gridView1_ctl01_txtXYZ' , I am using update panel called 'ABC'

Prashanth Thurairatnam Over a year ago

are you autogenerating the gridview? why not create the columns for the gridview so that in the designer you can place your textbox inside asp:TemplateField/HeaderTemplate

vml19 Over a year ago

Gridview is dynamic and it will be generated as per the needs of the data source

Prashanth Thurairatnam Over a year ago

If your controls are dynamic make sure you don't lose them on postback. If you have few controls in your header column, probably you can identify the control by type and read the value

foreach(Control c in gridView1.HeaderRow.Cells[0].Controls)             {                 if (c is TextBox)                 {                     string value = ((TextBox)c).Text;                 }              }

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