how to repopulate a Gridveiw when using parameters

Hi,

in my asp.net project i have placed a text box, a button, and a gridview.
I will enter some text on the text box and click the button. The button should run the query " select * from table where value=something" and populate the grid view. I dont know how to do this.

Any examples or links to read on will be very helpful ?

i can get the grid to display All of the data.. but i want after the page loads, i insert my own filter and re-populate the grid...

I am using VB Studion 2005 standart, asp.net website project and vb language.

LVL 13
WizillingAsked:
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Anurag AgarwalPython DeveloperCommented:
Currently you must be loading your grid in page load function.

Put this code in

If(NOT IsPostBack) Then
       LoadGrid('Default load condition')
End IF

Also make a function for the logic of populating the grid starting from making the query & database hit & setting the datasource of grid. Function should be like

Public Sub LoadGrid(ByVal whereCondition as String)
--
--
End Sub

Now call this function from page load when page loaded for first time with default where condition i.e. condition to load grid for first time.

On button click event call this function LoadGrid('textbox value') . this will repopulate the grid with your filter.

Let me know if you face any problem implementing this.

Anurag
0
 
Qaiser_Mehmood_MughalCommented:
this is the one way, create a method and pass the query based on ur requirment and the get the dataset and then bound this dataset to gridview again.    

    protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadData("Select * from customers");
            }
        }

        private DataSet LoadData(string strQuery)
        {
            DataSet objDataSet=new DataSet();
            // Use the SQLCommand to fill the data set
            return objDataSet;
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            LoadData("Select * from customers where customerName='" + txtName + "'");
        }
0
 
Qaiser_Mehmood_MughalCommented:
The Second option is to get the default view of your dataset object which is going to bound and then filter this object as many time as you want, based on the search criteria.

                DataSet objDataSet = new DataSet();
                DataView dv= objDataSet.Tables[0].DefaultView;
                // For DV, you can use following methods for seach.
                //dv.RowFilter
                //dv.Find();
                //dv.FindRows();
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