Alina Anjum Alina Anjum - 2 months ago 18
ASP.NET (C#) Question

Setting Rowspan for Dynamic Rows in asp.net Table Control

I've created an asp.net table and added rows to the table dynamically that is using Backend ( C# ) .

The First Column of the Rows should have Rowspan .

The rows are being added very fine and the Rowspan is also added fine but when the Postback occurs , The Rowspans gets changes automatically .

Can any one please help me to solve this problem :(

This is when the page loads First Time:

page first load
This is when PostBack Occured First Time :

PostBack first time
This is when Postback Occured Second Time :

PostBack second time
Thanks in advance

Here is my complete code :

.aspx Code

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style>
.tbl {
border:1px solid #000000;
}
.tbl td,th {
border:1px solid #000000;
}

</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Table runat="server" ID="tbl_fund" CssClass="tbl"></asp:Table>
<asp:Button runat="server" Text="Do Post Back" />
</div>
</form>
</body>
</html>


C# Code :

protected void Page_Load(object sender, EventArgs e)
{
PrintFundChanges();
}
public void PrintFundChanges()
{
//***************************Header Started*****************************
TableRow tr_head = new TableRow();
TableHeaderCell th1 = new TableHeaderCell();

th1.Text = "CNIC";
TableHeaderCell th2 = new TableHeaderCell();
th2.Text = "Field Name";
TableHeaderCell th3 = new TableHeaderCell();
th3.Text = "Updated Value";
TableHeaderCell th4 = new TableHeaderCell();
th4.Text = "Current Value";

TableHeaderCell th5 = new TableHeaderCell();
CheckBox chk_head = new CheckBox();
chk_head.ID = "chk_fund";
chk_head.CheckedChanged += new EventHandler(Chk_Fund_CheckedChanged);
chk_head.Text = "Approve / Disapprove";
chk_head.AutoPostBack = true;
th5.Controls.Add(chk_head);

TableHeaderCell th6 = new TableHeaderCell();
th6.Text = "Table Name";
th6.Style.Add("display", "none");
TableHeaderCell th7 = new TableHeaderCell();
th7.Text = "Column Name";
th7.Style.Add("display", "none");
TableHeaderCell th8 = new TableHeaderCell();
th8.Text = "pk_code";
th8.Style.Add("display", "none");
TableHeaderCell th9 = new TableHeaderCell();
th9.Text = "pk2_code";
th9.Style.Add("display", "none");
TableHeaderCell th10 = new TableHeaderCell();
th10.Text = "action_type";
th10.Style.Add("display", "none");

th1.Style.Add("width", "20%");
th2.Style.Add("width", "20%");
th3.Style.Add("width", "20%");
th4.Style.Add("width", "20%");

tr_head.Cells.Add(th1);
tr_head.Cells.Add(th2);
tr_head.Cells.Add(th3);
tr_head.Cells.Add(th4);
tr_head.Cells.Add(th5);
tr_head.Cells.Add(th6);
tr_head.Cells.Add(th7);
tr_head.Cells.Add(th8);
tr_head.Cells.Add(th9);
tr_head.Cells.Add(th10);
tbl_fund.Rows.Add(tr_head);

//****************************Header Ended*******************************
//****************************Print Updated Data Started*************************

//Getting distinct primary key data
//DataTable dt_DistinctPk = dt_FundUpdatedFields.DefaultView.ToTable(true, "pk_code");
DataTable dt_DistinctPk = new DataTable();
dt_DistinctPk.Columns.Add(new DataColumn("pk_code", typeof(string)));
DataRow dr = dt_DistinctPk.NewRow();
dr["pk_code"] = "123";
dt_DistinctPk.Rows.Add(dr);
dr = dt_DistinctPk.NewRow();
dr["pk_code"] = "456";
dt_DistinctPk.Rows.Add(dr);

for (int i = 0; i < dt_DistinctPk.Rows.Count; i++)
{
TableCell td_pk = new TableCell();
td_pk.Text = "<b style='font-size:13px !important;'>" + dt_DistinctPk.Rows[i]["pk_code"].ToString() + "</b>";
//int numberOfRecords = dt_FundUpdatedFields.Select("pk_code = " + dt_DistinctPk.Rows[i]["pk_code"].ToString()).Length;
int numberOfRecords =5;
td_pk.RowSpan = numberOfRecords;
bool IsAddAtOnce = true;

for (int j = 0; j < 5; j++)
{
string field_name_lable = "Column name here";
TableRow tr = new TableRow();
TableCell td1 = new TableCell();
td1.Text = field_name_lable;
TableCell td2 = new TableCell();
TableCell td3 = new TableCell();
td2.Text = "New Value here";
td3.Text = "Old Value here";
TableCell td4 = new TableCell();
CheckBox chk = new CheckBox();
chk.ID = "chk_" +j;
//td4.Controls.Add(chk);
TableCell td5 = new TableCell();
td5.Text = "tbl_name";
td5.Style.Add("display","none");
TableCell td6 = new TableCell();
td6.Text = "field_name";
td6.Style.Add("display", "none");
TableCell td7 = new TableCell();
td7.Text = j.ToString();
td7.Style.Add("display", "none");
TableCell td8 = new TableCell();
td8.Text = j.ToString();
td8.Style.Add("display", "none");
TableCell td9 = new TableCell();
td9.Text = "1";
td9.Style.Add("display", "none");

if (IsAddAtOnce)
{
tr.Cells.Add(td_pk);
IsAddAtOnce = false;
}
tr.Cells.Add(td1);
tr.Cells.Add(td2);
tr.Cells.Add(td3);
tr.Cells.Add(td4);
tr.Cells.Add(td5);
tr.Cells.Add(td6);
tr.Cells.Add(td7);
tr.Cells.Add(td8);
tr.Cells.Add(td9);
tbl_fund.Rows.Add(tr);
if (j ==5 - 1)//Last Termination of Loop
{
//Printing Attachments

td_pk.RowSpan = td_pk.RowSpan + 1;
td1 = new TableCell();
td1.Text = "CNIC Attachment";
td2 = new TableCell();
Image img_new = new Image();
// img_new.ImageUrl = "ImgHandler.ashx?typ=Newfund&emp=" + Requestor + "&pk=" + dt_FundUpdatedAttachments.Rows[k]["pk_code"].ToString();

td2.Controls.Add(img_new);
td3 = new TableCell();
Image img_old = new Image();
//img_old.ImageUrl = "ImgHandler.ashx?typ=Currfund&emp=" + Requestor + "&pk=" + dt_FundUpdatedAttachments.Rows[k]["pk_code"].ToString();

td3.Controls.Add(img_old);
td4 = new TableCell();
chk = new CheckBox();
//chk.ID = "chk_" + dt_FundUpdatedAttachments.Rows[k]["tbl_name"].ToString().ToUpper() + "_" + dt_FundUpdatedAttachments.Rows[k]["field_name"].ToString().ToUpper() + "_" + dt_FundUpdatedAttachments.Rows[k]["pk_code"].ToString().ToUpper() + "_";
td4.Controls.Add(chk);
td5 = new TableCell();
td5.Text = "tbl_name";
td5.Style.Add("display", "none");
td6 = new TableCell();
td6.Text ="field_name";
td6.Style.Add("display", "none");
td7 = new TableCell();
td7.Text = j.ToString();
td7.Style.Add("display", "none");
td8 = new TableCell();
td8.Text = "";
td8.Style.Add("display", "none");
td9 = new TableCell();
td9.Text = "1";
td9.Style.Add("display", "none");
tr = new TableRow();
tr.Cells.Add(td1);
tr.Cells.Add(td2);
tr.Cells.Add(td3);
tr.Cells.Add(td4);
tr.Cells.Add(td5);
tr.Cells.Add(td6);
tr.Cells.Add(td7);
tr.Cells.Add(td8);//pk2_code
tr.Cells.Add(td9);//action_type
tbl_fund.Rows.Add(tr);

}
}
}

////****************************Print New Data Ended***************************

TableRow tr_blank = new TableRow();
TableCell td_blank = new TableCell();
td_blank.Text = "Deleted Data";
td_blank.Style.Add("font-weight", "bold !important");
td_blank.Style.Add("font-size", " 16px !important");
td_blank.Style.Add("background-color", "#e3e3e3 !important");
td_blank.ColumnSpan = 10;
tr_blank.Cells.Add(td_blank);
tbl_fund.Rows.Add(tr_blank);


////****************************Print Deleted Data Started***************************

//****************************Print Deleted Data Ended***************************

}
protected void Chk_Fund_CheckedChanged(object sender, EventArgs e)
{
CheckBox chk = (CheckBox)sender;
bool IsChecked = chk.Checked;
for (int i = 1; i < tbl_fund.Rows.Count; i++)
{
string pk_code = "";
string tbl_name = "";
string col_name = "";
string pk2_code = "";
int CellsCount = tbl_fund.Rows[i].Cells.Count;
/*In this table rowspan is used for printing cnic number,
so the row who has rowspan will have cnic column in first termination ,
while in second termination the cell count will decrease because the
row before the current row will having the rowspan.
*/
if (CellsCount == 10)
{
tbl_name = tbl_fund.Rows[i].Cells[5].Text;
col_name = tbl_fund.Rows[i].Cells[6].Text;
pk_code = tbl_fund.Rows[i].Cells[7].Text;
pk2_code = tbl_fund.Rows[i].Cells[8].Text;
}
else if (CellsCount == 9)
{
tbl_name = tbl_fund.Rows[i].Cells[4].Text;
col_name = tbl_fund.Rows[i].Cells[5].Text;
pk_code = tbl_fund.Rows[i].Cells[6].Text;
pk2_code = tbl_fund.Rows[i].Cells[7].Text;
}

if (tbl_name != "")//if it is not a blank/header row
{
CheckBox ck = new CheckBox();
string chk_id = "chk_" + tbl_name + "_" + col_name + "_" + pk_code + "_" + pk2_code;
ck = (CheckBox)tbl_fund.Rows[i].Cells[4].FindControl(chk_id);//chk_tblname_colname_pk
ck.Checked = IsChecked;
}

}
}

Answer

just change the this line from

td_pk.RowSpan = td_pk.RowSpan + 1;

to

td_pk.RowSpan = numberOfRecords + 1;
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