Data table "0".ToString()

Question

1.00/5 (1 vote)

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Please go through the codes below and explain "0".ToString();.

C#

DataTable DTLocal = new DataTable();
DTLocal.Columns.Add(new DataColumn("DocName"));
DTLocal.Columns.Add(new DataColumn("Status"));
DTLocal.Columns.Add(new DataColumn("RecDate"));
DTLocal.Columns.Add(new DataColumn("ID"));
DTLocal.Columns.Add(new DataColumn("ImpDocEndCode"));
DTLocal.Columns.Add(new DataColumn("chekStatus"));
int x;
for (int i = 0; i < grdBasicImpDoc.Rows.Count; i++)
{
        DataRow dra = DTLocal.NewRow();

        DropDownList status =                      (DropDownList)grdBasicImpDoc.Rows[i].Cells[3].FindControl("ddlStatus");
        int strStatus = status.SelectedIndex;
        TextBox RxpDat = (TextBox)grdBasicImpDoc.Rows[i].Cells[4].FindControl("txtRecDate");
        string strRecDat = RxpDat.Text;
        string strDocName = grdBasicImpDoc.Rows[i].Cells[2].Text;
        string strDocCod = grdBasicImpDoc.Rows[i].Cells[1].Text;
        string strID = grdBasicImpDoc.Rows[i].Cells[5].Text;
        dra["DocName"] = strDocName;
        dra["Status"] = strStatus;
        dra["RecDate"] = strRecDat;
        dra["ID"] = 0;
        dra["ImpDocEndCode"] = strDocCod;
        CheckBox cba = (CheckBox)grdBasicImpDoc.Rows[i].Cells[0].FindControl("ChkDelete");
        if (cba.Checked == true)
            x = 1;
        else
            x = 0;
        dra["chekStatus"] = x;
        DTLocal.Rows.Add(dra);
}

if (txtDocName.Text != "")
{

    DataRow dra1 = DTLocal.NewRow();
    dra1["DocName"] = txtDocName.Text;
    dra1["Status"] = "0".ToString();
    dra1["RecDate"] = "0".ToString();
    dra1["ImpDocEndCode"] = "0".ToString();
    dra1["ID"] = "0".ToString();
    dra1["chekStatus"] = 1;
    DTLocal.Rows.Add(dra1);
}
txtDocName.Text = "";
grdBasicImpDoc.DataSourceID = null;
grdBasicImpDoc.DataSource = DTLocal;
grdBasicImpDoc.DataBind();

Posted 26-Apr-13 17:49pm

Sumon562

Updated 26-Apr-13 18:30pm

Karthik Harve

v2

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Comments

Sergey Alexandrovich Kryukov 27-Apr-13 0:45am

Short answer is: this code sample is an example of how you should not write code.
—SA

1 solution

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*Karthik Harve* · Answer 1 · 2013-04-26T18:34:00

Solution 1

Hi,

its nothing, the person is converting string object back to string. The ToString was not at all required as "0" represents string object. the below code also works.

C#

dra1["Status"] = "0";
dra1["RecDate"] = "0";
dra1["ImpDocEndCode"] = "0";
dra1["ID"] = "0";

Posted 26-Apr-13 18:34pm

Karthik Harve

Updated 26-Apr-13 18:35pm

v2

Comments

Sumon562 27-Apr-13 0:41am

Thank you Mr. Karthik Harve

Karthik Harve 27-Apr-13 0:43am

Welcome.!! Happy Coding :-)

Sergey Alexandrovich Kryukov 27-Apr-13 0:44am

This is correctly explained, but it needs a note: the code shown in question simply makes no sense. (I voted 4 this time.)

I would also tell OP that this is a counter-productive way of learning things. Anyone can pull any kind of trash from the Web, any amount of it. Why asking questions on any piece of junk? We should answer questions mostly on the code written by inquirers...

—SA

Karthik Harve 27-Apr-13 0:48am

I totally agree with you.

Sergey Alexandrovich Kryukov 27-Apr-13 0:52am

Thank you.
—SA