gridview导出问题
我有一个gridview绑定了数据，现在有个问题 我其中有一列数据 是我绑定了gridview后 再通过方法赋值上去的（需求所以必须得这么做），这样页面是能显示数据的，但是当我导出这个girdview的时候 却没有把这列值导出去，导出的别的绑定的列都有值 就是这列后面赋值上去的没有请问有什么方法可以 把这列的数据也一并导出吗？
this.stopGV.DataSource = DataDataTable;
this.stopGV.DataBind();
string x = "";
for (int i = 0; i < this.stopGV.Rows.Count; i++)
{
Label lbaddress = (Label)this.stopGV.Rows[i].Cells[7].FindControl((Convert.ToInt32(this.stopGV.Rows[0].Cells[0].Text) + i).ToString());
x += "showAddress(" + (Convert.ToInt32(this.stopGV.Rows[0].Cells[0].Text)+i) + "," + this.stopGV.Rows[i].Cells[3].Text + "," + this.stopGV.Rows[i].Cells[4].Text + ");";
//lbaddress.Attributes.Add("onload", "showAddress(onetwo,121.557284,29.825411);");
}
ScriptManager.RegisterClientScriptBlock(this, Page.GetType(), "x", x, true);
-----------------------------这个是我绑定好后 再添加列值的方法 能在页面显示
Export("application/ms-excel", "停车统计" + DateTime.Now.ToString("yyMMddhhmmss") + ".xls", stopGV);
——————————————这个是我导出数据的代码 stopGV就是gridview
小弟知道这样只能导出绑定的数据 有没有大虾能帮忙 用别的方法 让我把这个列值也导出去
分数不多 ，感激不尽 --------------------编程问答-------------------- 吧你上面得到的数据源，转成DataTable然后加一列不就得了 --------------------编程问答--------------------
这一列本身是存在的 只是值一开始都是空的，我是然后赋值到这列上的 --------------------编程问答-------------------- 你导出的时候有值吗，有就加上啊 --------------------编程问答-------------------- 可以实现直接导出gridview显示的数据，而不是根据数据源 --------------------编程问答--------------------
哦 大虾 能教我下如何直接导出显示的数据 而不是数据源吗？ --------------------编程问答-------------------- 没有细看你的问题,我是这么导出的,看能不能用上
Response.Clear();
Response.Buffer = true;
Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode(strFileName, System.Text.Encoding.UTF8) + ".xls");//这样的话，可以设置文件名为中文，且文件名不会乱码。其实就是将汉字转换成UTF8
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.Charset = "gb2312";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Response.ContentType = "application/vnd.xls";
System.IO.StringWriter stringWrite = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
if (GridViewPlanFee.AllowPaging == true)
{
GridViewPlanFee.AllowPaging = false; //如果存在分页就要设置这个 先不让他分页 然后在绑定 当然也可以做到导出当前页或者导出全部！看自己需要啦
GridViewPlanFee.DataBind();//重新绑定一次
GridViewPlanFee.RenderControl(htmlWrite);
Response.Output.Write(stringWrite.ToString());
Response.Flush();
Response.End();
GridViewPlanFee.AllowPaging = true;
GridViewPlanFee.DataBind();
}
else
{
GridViewPlanFee.RenderControl(htmlWrite);
Response.Output.Write(stringWrite.ToString());
Response.Flush();
Response.End();
} --------------------编程问答--------------------
这个应该是通过数据源导出的吧 不是直接导出gridview显示的数据 --------------------编程问答--------------------
导出了 这列当然没值了，有值我就不用加了啊 我就是想让他根据gv显示的导出 而不是通过数据源导出 --------------------编程问答-------------------- 代码如下
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindData();
}
}
private void BindData()
{
// make the query
string query = "SELECT * FROM Stable";
SqlConnection myConnection = new SqlConnection(ConnectionString);
SqlDataAdapter ad = new SqlDataAdapter(query, myConnection);
DataSet ds = new DataSet();
ad.Fill(ds, "Stable");
GridView1.DataSource = ds;
GridView1.DataKeyNames = new string[] { "SID" };//主键
GridView1.DataBind();
}
//导出Excel，带提示保存。
protected void Button1_Click(object sender, EventArgs e)
{
//GridView1.Columns.Insert(5, column); //添加第6 列
if (GridView1 != null)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode("订卷统计") + ".xls");
// 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView1.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
}
else
{
this.Response.Write("<script language=javascript>alert('没有符合条件的记录！')</script>");
}
}
public override void VerifyRenderingInServerForm(Control control)
{
// Confirms that an HtmlForm control is rendered for
}
protected override void OnInit(EventArgs e)
{
TemplateField customField = new TemplateField();
customField.ShowHeader = true;
customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "添加行");//新添加行的Header
GridViewTemplate gvt = new GridViewTemplate(DataControlRowType.EmptyDataRow, "lbtn", "");//添加一个空行
gvt.eh += new GridViewTemplate.EventHandler(lbtn_Click);
customField.ItemTemplate = gvt;
GridView1.Columns.Add(customField);
base.OnInit(e);
}
public class GridViewTemplate : ITemplate
{
public delegate void EventHandler(object sender, EventArgs e);
public event EventHandler eh;
private DataControlRowType templateType;
private string columnName;
private string controlID;
public GridViewTemplate(DataControlRowType type, string colname)
{
templateType = type;
columnName = colname;
}
public GridViewTemplate(DataControlRowType type, string controlID, string colname)
{
templateType = type;
this.controlID = controlID;
columnName = colname;
}
public void InstantiateIn(System.Web.UI.Control container)
{
switch (templateType)
{
case DataControlRowType.Header:
Literal lc = new Literal();
lc.Text = columnName;
container.Controls.Add(lc);
break;
case DataControlRowType.DataRow:
LinkButton lbtn = new LinkButton();
lbtn.ID = this.controlID;
if (eh != null)
{
lbtn.Click += new System.EventHandler(eh);
}
lbtn.DataBinding += new System.EventHandler(lbtn_DataBinding);
container.Controls.Add(lbtn);
break;
default:
break;
}
}
void lbtn_DataBinding(object sender, EventArgs e)
{
LinkButton lbtn = sender as LinkButton;
if (lbtn != null)
{
GridViewRow container = lbtn.NamingContainer as GridViewRow;
if (container != null)
{
object dataValue = DataBinder.Eval(container.DataItem, columnName);
if (dataValue != DBNull.Value)
{
lbtn.Text = dataValue.ToString();
}
}
}
}
}
protected void lbtn_Click(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(GetType(), "test", "alert('ok');", true);
}
至于上面的GridView动态添加模板列 .参考sandy945写的
补充：.NET技术 , ASP.NET
