Filtering and Dymanic Columns

[ali ayhan]

Hi
This code in the page load and I am not control page postback.

.......
RadGrid1.Columns.Clear();
RadGrid1.MasterTableView.Columns.Clear();
RadGrid1.AutoGenerateColumns = false;

GridBoundColumn boundColumn;
for (int i = 0; i < dt.Columns.Count; i++)
{
if (Request.QueryString["calc"].ToString().Contains(dt.Columns[i].ColumnName.ToString()))
{
    boundColumn = new GridBoundColumn();
    boundColumn.DataField = dt.Columns[i].ColumnName.ToString();
    boundColumn.HeaderText = dt.Columns[i].ColumnName.ToString();
    boundColumn.Groupable = true;
    boundColumn.UniqueName = dt.Columns[i].ColumnName.ToString();

    string[] sumColums = Request.QueryString["calc"].ToString().Split('-');

    for (int a = 0; a < sumColums.Length; a++)
    {
        if (sumColums[a].Contains(dt.Columns[i].ColumnName.ToString()))
        {
            string[] colFormat = sumColums[a].Split(',');
            boundColumn.FooterAggregateFormatString = colFormat[1].ToString();

            if (colFormat[2].ToString() == "sum")
            {
                boundColumn.Aggregate = GridAggregateFunction.Sum;
            }
            else if (colFormat[2].ToString() == "count")
            {
                boundColumn.Aggregate = GridAggregateFunction.Count;
            }
            else if (colFormat[2].ToString() == "avg")
            {
                boundColumn.Aggregate = GridAggregateFunction.Avg;
            }
        }
    }

    RadGrid1.MasterTableView.Columns.Add(boundColumn);
}

....

So my problem is, when I filter a columns is ok, but when I filter other columns, my before filter values gone. I miss my before filter values. My question, how can I set again before filter columns values?

Hashtable hsFiltering = new Hashtable();
for (int i = 0; i < RadGrid1.Columns.Count; i++)
{
    hsFiltering[RadGrid1.Columns[i].HeaderText] = RadGrid1.Columns[i].CurrentFilterValue;
}

I get before filter values via this code, but I can not bind filter value again after postback.

Thank you.

[Pavlina]

Hello Ali,

I suggest that you examine the online example below which demonstrates saving and restoring RadGrid settings by user:
http://demos.telerik.com/aspnet-ajax/grid/examples/programming/savinggridsettingsonperuserbasis/defaultcs.aspx

Give it a try and let me know if it helps.

Greetings,
Pavlina
the Telerik team

[ali ayhan]

//Solution: protected void RadGrid1_PreRender(object sender, EventArgs e)

{

if (Request.QueryString["calc"] != null)

{

string[] calcColums = Request.QueryString["calc"].ToString().Split('-');

for (int i = 0; i < calcColums.Length; i++)

{

string colName = calcColums[i].Split(',')[0];

string format = calcColums[i].Split(',')[1];

string agg = calcColums[i].Split(',')[2];

GridBoundColumn column2 = (GridBoundColumn)RadGrid1.MasterTableView.GetColumnSafe(colName);

try

{

column2.FooterAggregateFormatString = format;

column2.DataFormatString = format;

}

catch { }

switch (agg)

{

case "sum":

column2.Aggregate = GridAggregateFunction.Sum;

break;

case "count":

column2.Aggregate = GridAggregateFunction.Count;

break;

case "avg":

column2.Aggregate = GridAggregateFunction.Avg;

break;

default: break;

}

}

RadGrid1.Rebind();

}

}

[Pavlina]

Hi Ali,

I am glad to hear that you managed to solve the problem. In case you need further assistance or you have additional questions, do not hesitate to contact me again.

Kind regards,
Pavlina
the Telerik team