如何在asp.net C＃中的水晶报表中获取GridView文本框值

Question

i stuck again in asp.net.. i'm creating a website in which people purchases items selecting category(Database created in sql server tale name is items and category is its field) from dropdownlist and shows into a 1st GridView. Buyer check the items from 1st Gridview and click select button and those selected items shows in 2nd Gridview. And 2nd Gridview has TemplateField Textbox and it take Quantity item purchased.

What i want is when i click generate report the gridview2 textbox value should display Quantity purchased by buyer in crystal report.

i only need to do this only i have no problem getting item names in report but i can't get values of gridview textboxes. i Googled but no luck....

anyone can help me with example please..i'm working on c#

I tried this

 protected void Button1_Click(object sender, EventArgs e)
 {
    List<string> checkedIDs = new List<string>();

    for (int i = 0; i < GridView1.Rows.Count; i++)
    {
        CheckBox chbox = GridView1.Rows[i].Cells[0].FindControl("CheckBox1") as CheckBox;
        if (chbox.Checked == true)
        {
            checkedIDs.Add("'" + GridView1.Rows[i].Cells[1].Text + "'"); 

        }

    }
    string conn = ConfigurationManager.ConnectionStrings["Test_T3ConnectionString2"].ConnectionString;
    SqlConnection con = new SqlConnection(conn);
    string query = "select prod_name,price from products where prod_id in (" + string.Join(",", checkedIDs.ToArray()) + ")"; 
    SqlCommand cmd = new SqlCommand(query, con);
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    DataSet1 ds = new DataSet1(); 
    da.Fill(ds.Tables["Purchase_Report"]);

    GridView2.DataSource = ds;
    GridView2.DataBind();
    ViewState["Records"] = ds;

}




protected void Button2_Click(object sender, EventArgs e)
{

    ReportDocument rd = new ReportDocument();
    rd.Load(Server.MapPath("CrystalReport.rpt"));
    rd.SetDataSource(ViewState["Records"]);
    rd.SetDatabaseLogon("sa", "abc", "localhost", "Test_T3");
    rd.SetParameterValue("Quantity",GridView2.Rows[0].Cells[0].FindControl("TextBox1")); //this is what i tried, Quantity is a parameter i created in my crystal report

    CrystalReportViewer1.ReportSource = rd;
    CrystalReportViewer1.DataBind();

}

Thanks

Answer 1

I'd suggest to save/persist all (necessary) selected information/data from "GridView" to the Database and push or pull saved data to the CrystalReport engine.

You can use crystal report parameters to pass value or multiple values but as per your need I don't this would help you.

Edit:

You're trying to pass TextBox reference. Try following:

  TextBox tx= GridView2.Rows[0].Cells[0].FindControl("TextBox1") as TextBox;
  rd.SetParameterValue("Quantity",tx.Text);

For multi-value (array) parameter value

  rd.SetParameterValue("@data", new int[]{10,20,30,40});