Search a gridview using dataview

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I have a gridview which consists of columns with different datatypes..
I have provided type and search functionality...
Whenever user types his criteria values of all columns are checked and appropriate rows are filtered..
It works fine with varchar... But has some problems with int,float...
I am using dv.RowFilter....

criteria = ViewState["Criteria"].ToString();
                string selected = dropdownCriteria.SelectedValue;
                string textEntered = searchBox.Value.ToString();
                DataSet ds = new DataSet();
                ds = (DataSet)ViewState["InitialData"];
                DataView dv = new DataView();
                dv = ds.Tables[0].DefaultView;
                dv.RowFilter = selected + " like '" + textEntered + "%'";
                reportGrid.DataSource = dv;
                reportGrid.DataBind();
                reportGrid.AllowPaging = false;
                reportGrid.AllowSorting = false;
                reportGrid.AutoGenerateDeleteButton = false;
                reportGrid.AutoGenerateEditButton = false;
                panelGrid.Update();

                DataTable dt = new DataTable();
                dt = dv.ToTable();
                DataSet tempDS = new DataSet();
                tempDS.Tables.Add(dt);

                reportGrid.AllowPaging = true;
                reportGrid.AllowSorting = true;
                reportGrid.AutoGenerateDeleteButton = true;
                reportGrid.AutoGenerateEditButton = true;
                ViewState["CurrData"] = tempDS;

Posted 27-Feb-13 6:14am

Member 9644631

Updated 28-Feb-13 16:40pm

v3

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Richard C Bishop 27-Feb-13 12:16pm

You will have to post the code you are using. We cannot see what is going on without it.

Member 9644631 27-Feb-13 12:21pm

criteria = ViewState["Criteria"].ToString();
string selected = dropdownCriteria.SelectedValue;
string textEntered = searchBox.Value.ToString();
DataSet ds = new DataSet();
ds = (DataSet)ViewState["InitialData"];
DataView dv = new DataView();
dv = ds.Tables[0].DefaultView;
dv.RowFilter = selected + " like '" + textEntered + "%'";
reportGrid.DataSource = dv;
reportGrid.DataBind();
reportGrid.AllowPaging = false;
reportGrid.AllowSorting = false;
reportGrid.AutoGenerateDeleteButton = false;
reportGrid.AutoGenerateEditButton = false;
panelGrid.Update();

DataTable dt = new DataTable();
dt = dv.ToTable();
DataSet tempDS = new DataSet();
tempDS.Tables.Add(dt);

reportGrid.AllowPaging = true;
reportGrid.AllowSorting = true;
reportGrid.AutoGenerateDeleteButton = true;
reportGrid.AutoGenerateEditButton = true;
ViewState["CurrData"] = tempDS;

Richard C Bishop 27-Feb-13 12:26pm

It looks like to me, when a number is entered you are getting the ToString() of them and that is probably what the problem is. If you can use a Switch Case and determine if the entered data is text or numeric, you could then convert the data to which ever datatype you need. Does that make sense?

Member 9644631 27-Feb-13 22:56pm

Ya that could be help... But it would be more helpful if i consider only those columns with same data types with one entered by user.. That is if user enters a number then consider only those columns with data type as float or int

Richard C Bishop 28-Feb-13 9:47am

Ok, what about doing something like this: object info = textEntered;
info.GetType();

This will get the type of the textEntered variable and then you could determine what you need to do with it.

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_Amy · Answer 1 · 2013-02-28T17:01:00

Check this out in Lambda Expression:

C#

criteria = ViewState["Criteria"].ToString();
string selected = dropdownCriteria.SelectedValue;
string textEntered = searchBox.Value.ToString();
DataSet ds = new DataSet();
ds = (DataSet)ViewState["InitialData"];
reportGrid.DataSource = ds.Tables[0].AsEnumerable().Where(s=>s[selected].ToString().StartsWith(textEntered)).OrderBy(s=>s[selected].ToString()).CopyToDataTable();
reportGrid.DataBind();
reportGrid.AllowPaging = false;
reportGrid.AllowSorting = false;
reportGrid.AutoGenerateDeleteButton = false;
reportGrid.AutoGenerateEditButton = false;
panelGrid.Update();

DataTable dt = new DataTable();
dt = ds.Tables[0].AsEnumerable().Where(s=>s[selected].ToString().StartsWith(textEntered)).OrderBy(s=>s[selected].ToString()).CopyToDataTable();
DataSet tempDS = new DataSet();
tempDS.Tables.Add(dt);

reportGrid.AllowPaging = true;
reportGrid.AllowSorting = true;
reportGrid.AutoGenerateDeleteButton = true;
reportGrid.AutoGenerateEditButton = true;
ViewState["CurrData"] = tempDS;

--Amit

mandar_dt · Answer 2 · 2013-11-24T20:28:00

Do something like this

string search = String.Format("Convert(<column name="">,'System.String') LIKE '{0}*'", EscapeLikeValue(Search.Trim()));

DataView dv = new DataView(dt);

dv.RowFilter = search;

dt = dv.ToTable();

-------------------------------------------------------------------------------------------

C#

public string EscapeLikeValue(string valueWithoutWildcards)
        {
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            for (int i = 0; i < valueWithoutWildcards.Length; i++)
            {
                char c = valueWithoutWildcards[i];
                if (c == '*' || c == '%' || c == '[' || c == ']')
                    sb.Append("[").Append(c).Append("]");
                else if (c == '\'')
                    sb.Append("''");
                else
                    sb.Append(c);
            }
            return sb.ToString();
        }

Karthik_Mahalingam · Answer 3 · 2013-11-26T05:12:00

Solution 3

have a look at this for complete referece of filter

http://www.csharp-examples.net/dataview-rowfilter/[^]

Posted 26-Nov-13 5:12am

Karthik_Mahalingam

Search a gridview using dataview

3 solutions

Solution 1

Solution 2

Solution 3

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