CODEWITHSUNDEEP
c#asp.netgridviewdataview
Tassisto
Tassisto

Reputation: 10345

How to sort a DateTime-column in DataView?

I have a gridview with some columns and I need to sort the gridview by a date-column. But I fail in sorting it correctly. This is the code that I use:

dt.DefaultView.Sort = "Meldingsdatum asc";
gvOutlookMeldingen.DataSource = dt;
gvOutlookMeldingen.DataBind();

Can someone help me, please.

Upvotes: 3

Views: 14611

Answers (4)

Dennis
Dennis

Reputation: 43

My code snippet hopefully shows the need to set the column as typeof(DateTime) before you can sort it properly

        EntityCollection result = serviceProxy.RetrieveMultiple(querybyattribute);

        DataTable dt = new DataTable();
        dt.Columns.Add("Title");
        dt.Columns.Add("Created On", typeof(DateTime));

        foreach (Entity entity in result.Entities)
        {
            DataRow dr = dt.NewRow();

            dr["Title"] = entity.Attributes["title"].ToString();
            dr["Created On"] = entity.Attributes["createdon"];

            dt.Rows.Add(dr);
        }

        DataView dv = dt.DefaultView;
        dv.Sort = "Created On desc";
        DataTable sortedDT = dv.ToTable();

        dataGridView1.DataSource = sortedDT;

Upvotes: 2

Mohsin Shaikh
Mohsin Shaikh

Reputation: 71

DataView stores date or anything as string type. Thus when you sort it sort by string. To sort it as DateTime , you need to convert it to DateTime before adding any data as follows,

dt.Columns["Date"].DataType = Type.GetType("System.DateTime");

Upvotes: 2

openshac
openshac

Reputation: 5165

Is you column of type DateTime, if not then it probably needs to be. Do this right at the start before you populate the table. Alternatively you could create a second column of type DateTime and use that but it's a little messy :-)

Upvotes: 1

sajoshi
sajoshi

Reputation: 2763

http://forums.asp.net/p/1267353/2393006.aspx

Upvotes: 3

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