数据表“0”.ToString（） [英] Data table "0".ToString()

问题描述

请仔细阅读以下代码并解释0.ToString（）;.

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

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();

推荐答案

什么都没有，这个人正在将字符串对象转换回字符串。 ToString 根本不需要，因为0表示字符串对象。以下代码也有效。

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.

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

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