将行添加到gridView
问题描述：
我想在插入的行之后添加新行。我有一个按钮，显示引导模式与一些DropDownLists和Textboxes。单击模式中的按钮应将模态数据插入到表格中。问题是，当我尝试添加新行时，它会替换当前行。什么即时做错了？这里是我的代码示例： 的.cs：将行添加到gridView
protected void addTrip_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dostawca = DropDownDostawca.SelectedValue.ToString();
cel = txtCel.InnerText;
krajZagr = "";
kraj = DropDownKraj.SelectedValue.ToString();
miasto = txtMiasto.Text;
if(rbKraj.Checked == true)
{
krajZagr = "Krajowa";
}
if(rbZag.Checked == true)
{
krajZagr = "Zagraniczna";
}
if(cel=="" || miasto=="" || kraj=="" || dostawca=="")
{
ClientScript.RegisterStartupScript(this.GetType(), "alert", "ShowPopup2();", true);
}
else
{
if(gridViewTrips.Columns.Count == 0)
{
DataRow dr = dt.NewRow();
DataColumn dc = new DataColumn("DO_KOGO");
DataColumn dc2 = new DataColumn("CEL");
DataColumn dc3 = new DataColumn("KRAJOWA_ZAGRANICZNA");
DataColumn dc4 = new DataColumn("KRAJ");
DataColumn dc5 = new DataColumn("MIASTO");
dt.Columns.Add(dc);
dt.Columns.Add(dc2);
dt.Columns.Add(dc3);
dt.Columns.Add(dc4);
dt.Columns.Add(dc5);
dr["DO_KOGO"] = dostawca;
dr["CEL"] = cel;
dr["KRAJOWA_ZAGRANICZNA"] = krajZagr;
dr["KRAJ"] = kraj;
dr["MIASTO"] = miasto;
dt.Rows.Add(dr);
gridViewTrips.DataSource = dt;
gridViewTrips.DataBind();
}
else
{
DataRow dr = dt.NewRow();
dr["DO_KOGO"] = dostawca;
dr["CEL"] = cel;
dr["KRAJOWA_ZAGRANICZNA"] = krajZagr;
dr["KRAJ"] = kraj;
dr["MIASTO"] = miasto;
dt.Rows.Add(dr);
gridViewTrips.DataSource = dt;
gridViewTrips.DataBind();
}
}
}
的.aspx：
<asp:GridView runat="server" id="gridViewTrips">
<EmptyDataTemplate>
<asp:Table ID="TableTrips" runat="server" CssClass="table table-bordered">
<asp:TableHeaderRow>
<asp:TableHeaderCell>Do kogo</asp:TableHeaderCell>
<asp:TableHeaderCell>Cel</asp:TableHeaderCell>
<asp:TableHeaderCell>Krajowa/Zagraniczna</asp:TableHeaderCell>
<asp:TableHeaderCell>Kraj</asp:TableHeaderCell>
<asp:TableHeaderCell>Miasto</asp:TableHeaderCell>
</asp:TableHeaderRow>
</asp:Table>
</EmptyDataTemplate>
</asp:GridView>
编辑：现在我明白了，当我调试我的项目如果我有什么：“如果（gridViewTrips.Columns .Count == 0）“插入一行后显示我没有任何列。任何想法是怎么回事？