在gridview中分页。指定的参数超出了有效值的范围。参数名称：index [英] Paging in gridview. Specified argument was out of the range of valid values. Parameter name: index
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问题描述
我在GridView2_RowDataBound的第一行收到此错误，这是
string str =Category：+ ... .......
aspx code
I am getting this error on first line of GridView2_RowDataBound which is
string str = " Category :" +........
aspx code
<asp:GridView ID="GridView2" runat="server" GridLines="None"
onrowdatabound="GridView2_RowDataBound" AllowPaging="true" align="center"
onpageindexchanging="GridView2_PageIndexChanging" PageSize="4" >
<AlternatingRowStyle BackColor="White" />
<RowStyle BackColor="#CCCCCC" />
</asp:GridView>
.cs代码
.cs code
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Recentinternship();
}
}
protected void Recentinternship()
{
SqlConnection con = new SqlConnection("Data Source=jayraj-pc\\sqlexpress;Initial Catalog=Internship;Integrated Security=True;Pooling=False");
con.Open();
string str = "select B.CompanyLogo as ' ',A.Title,A.InternshipStartDate,A.ApplicationDeadline,A.Duration,A.InternshipCity,A.Category,A.Stipend,A.InternshipID,A.Degree,A.Branch,A.CompanyID,A.Title,A.CompanyName from Internship AS A INNER JOIN Companies AS B ON A.CompanyID=B.CompanyID ";
SqlCommand cmd = new SqlCommand(str, con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
SqlDataReader dr = cmd.ExecuteReader();
GridView2.DataSource = dr;
GridView2.DataBind();
//GridView2.BottomPagerRow.Visible = true;
dr.Close();
con.Close();
}
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{
string str = " Category :" + e.Row.Cells[6].Text + "<br/>Duration :" + e.Row.Cells[4].Text + "<br/>InternshipCity :" + e.Row.Cells[5].Text + "<br/>Stipend :" + e.Row.Cells[7].Text + "<br/>InternshipStartDate :" + e.Row.Cells[2].Text + "<br/>ApplicationDeadline :" + e.Row.Cells[3].Text + "<br/>Required Degree :" + e.Row.Cells[9].Text + "<br/>Required Branch :" + e.Row.Cells[10].Text;
e.Row.Cells[1].Text = str;
//e.Row.Cells[1].Visible = false;
//e.Row.Cells[2].Visible = false;
e.Row.Cells[3].Visible = false;
e.Row.Cells[4].Visible = false;
e.Row.Cells[5].Visible = false;
e.Row.Cells[6].Visible = false;
e.Row.Cells[7].Visible = false;
e.Row.Cells[8].Visible = false;
e.Row.Cells[9].Visible = false;
e.Row.Cells[10].Visible = false;
e.Row.Cells[11].Visible = false;
e.Row.Cells[12].Visible = false;
e.Row.Cells[13].Visible = false;
if (GridView2.Rows.Count > 0)
{
GridView2.HeaderRow.Cells[0].Text = " ";
GridView2.HeaderRow.Cells[1].Text = " ";
GridView2.HeaderRow.Cells[2].Text = " ";
}
Image img = new Image();
img.ID = "abc";
img.ImageUrl = e.Row.Cells[0].Text;
e.Row.Cells[0].Controls.Add(img);
Button btn = new Button();
//btn.Text = "preview";
e.Row.Cells[2].Controls.Add(btn);
btn.CausesValidation = false;
btn.Text = "View and Apply";
if (Session.Count > 0)
{
btn.PostBackUrl = "Apply_internship.aspx?InternshipID=" + e.Row.Cells[8].Text + "&CompanyID=" + e.Row.Cells[11].Text + "&Title=" + e.Row.Cells[12].Text + "&CompanyName=" + e.Row.Cells[13].Text + "";
}
else
{
btn.PostBackUrl = "Apply_login.aspx";
}
}
protected void GridView2_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView2.PageIndex = e.NewPageIndex;
Recentinternship();
}
推荐答案
string str = " Category :" + e.Row.Cells[6].Text + "<br/>Duration :" + e.Row.Cells[4].Text + "<br/>InternshipCity :" + e.Row.Cells[5].Text + "<br/>Stipend :" + e.Row.Cells[7].Text + "<br/>InternshipStartDate :" + e.Row.Cells[2].Text + "<br/>ApplicationDeadline :" + e.Row.Cells[3].Text + "<br/>Required Degree :" + e.Row.Cells[9].Text + "<br/>Required Branch :" + e.Row.Cells[10].Text;
在这里，您通过 index 读取特定 Cells 的值，我想，您已经写了一些无效的索引。请注意， index 始终从0开始。
调试时检查中的每个值立即窗口知道这些 Cell 索引中是否有正确或错误。
Here you are reading values of particular Cells by index and I guess, you have written some invalid index. Note that index always starts from 0.
While debugging check each value in Immediate Window to know if any of these Cell Index is right or wrong.
看到你在这个事件中缺少一行
See you are missing one line inside this event
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{//You are missing this line here
if(e.Row.RowType == DataControlRowType.DataRow)
{
// Now you can get the lines
string str = " Category :" + e.Row.Cells[6].Text + "<br />Duration :" + e.Row.Cells[4].Text + "<br />InternshipCity :" + e.Row.Cells[5].Text + "<br />Stipend :" + e.Row.Cells[7].Text + "<br />InternshipStartDate :" + e.Row.Cells[2].Text + "<br />ApplicationDeadline :" + e.Row.Cells[3].Text + "<br />Required Degree :" + e.Row.Cells[9].Text + "<br />Required Branch :" + e.Row.Cells[10].Text;
e.Row.Cells[1].Text = str;
//e.Row.Cells[1].Visible = false;
//e.Row.Cells[2].Visible = false;
e.Row.Cells[3].Visible = false;
e.Row.Cells[4].Visible = false;
e.Row.Cells[5].Visible = false;
e.Row.Cells[6].Visible = false;
e.Row.Cells[7].Visible = false;
e.Row.Cells[8].Visible = false;
e.Row.Cells[9].Visible = false;
e.Row.Cells[10].Visible = false;
e.Row.Cells[11].Visible = false;
e.Row.Cells[12].Visible = false;
e.Row.Cells[13].Visible = false;
if (GridView2.Rows.Count > 0)
{
GridView2.HeaderRow.Cells[0].Text = " ";
GridView2.HeaderRow.Cells[1].Text = " ";
GridView2.HeaderRow.Cells[2].Text = " ";
}
Image img = new Image();
img.ID = "abc";
img.ImageUrl = e.Row.Cells[0].Text;
e.Row.Cells[0].Controls.Add(img);
Button btn = new Button();
//btn.Text = "preview";
e.Row.Cells[2].Controls.Add(btn);
btn.CausesValidation = false;
btn.Text = "View and Apply";
if (Session.Count > 0)
{
btn.PostBackUrl = "Apply_internship.aspx?InternshipID=" + e.Row.Cells[8].Text + "&CompanyID=" + e.Row.Cells[11].Text + "&Title=" + e.Row.Cells[12].Text + "&CompanyName=" + e.Row.Cells[13].Text + "";
}
else
{
btn.PostBackUrl = "Apply_login.aspx";
}
}
}
现在看代码。现在我给出了一个rowtype条件
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