Putting GridView data in a DataTable

Question

I m trying to save a GridView to a DataTable   I have code which should in theory do it but I keep getting this error      Column 0 doesn t exist   Here is my code    protected void Button1 Click object sender  EventArgs e                DataTable dt   new DataTable            for  int j   0  j  lt  GridView1 Rows Count  j                          DataRow dr              GridViewRow row   GridView1 Rows j               dr   dt NewRow                for  int i   0  i  lt  row Cells Count  i                                  dr i    row Cells i  Text                             dt Rows Add dr                     Any help on how to fix this

User · Accepted Answer

you can do something like this   DataTable dt   new DataTable    for  int i   0  i  lt  GridView1 Columns Count  i                  dt Columns Add  column  i ToString           foreach  GridViewRow row in GridView1 Rows                DataRow dr   dt NewRow            for int j   0 j lt GridView1 Columns Count j                                  dr  column    j ToString      row Cells j  Text                             dt Rows Add dr           And that will show that it works   GridView6 DataSource   dt  GridView6 DataBind

User · Answer

protected void btnExportExcel Click object sender  EventArgs e        DataTable  datatable   new DataTable        for  int i   0  i  lt  grdReport Columns Count  i                   datatable Columns Add grdReport Columns i  ToString               foreach  GridViewRow row in grdReport Rows                DataRow dr    datatable NewRow            for  int j   0  j  lt  grdReport Columns Count  j                          if   row Cells j  Text Equals   amp nbsp                     dr grdReport Columns j  ToString      row Cells j  Text                      datatable Rows Add dr             ExportDataTableToExcel  datatable

User · Answer

user this full solution to convert gridview to datatable    public DataTable gridviewToDataTable GridView gv                         DataTable dtCalculate   new DataTable  TableCalculator                    Create Column 1  Date             DataColumn dateColumn   new DataColumn                dateColumn DataType   Type GetType  System DateTime                dateColumn ColumnName    date                   Create Column 3  TotalSales             DataColumn loanBalanceColumn   new DataColumn                loanBalanceColumn DataType   Type GetType  System Double                loanBalanceColumn ColumnName    loanbalance                 DataColumn offsetBalanceColumn   new DataColumn                offsetBalanceColumn DataType   Type GetType  System Double                offsetBalanceColumn ColumnName    offsetbalance                 DataColumn netloanColumn   new DataColumn                netloanColumn DataType   Type GetType  System Double                netloanColumn ColumnName    netloan                 DataColumn interestratecolumn   new DataColumn                interestratecolumn DataType   Type GetType  System Double                interestratecolumn ColumnName    interestrate                DataColumn interestrateperdaycolumn   new DataColumn                interestrateperdaycolumn DataType   Type GetType  System Double                interestrateperdaycolumn ColumnName    interestrateperday                   Add the columns to the ProductSalesData DataTable             dtCalculate Columns Add dateColumn               dtCalculate Columns Add loanBalanceColumn               dtCalculate Columns Add offsetBalanceColumn               dtCalculate Columns Add netloanColumn               dtCalculate Columns Add interestratecolumn               dtCalculate Columns Add interestrateperdaycolumn                foreach  GridViewRow row in gv Rows                                DataRow dr                  dr   dtCalculate NewRow                     dr  date     DateTime Parse row Cells 0  Text                   dr  loanbalance     double Parse row Cells 1  Text                   dr  offsetbalance     double Parse row Cells 2  Text                   dr  netloan     double Parse row Cells 3  Text                   dr  interestrate     double Parse row Cells 4  Text                   dr  interestrateperday     double Parse row Cells 5  Text                     dtCalculate Rows Add dr                                return dtCalculate

User · Answer

Copying Grid to datatable          if  GridView Rows Count    0                          Forloop for header             for  int i   0  i  lt  GridView HeaderRow Cells Count  i                                  dt Columns Add GridView HeaderRow Cells i  Text                               foreach for datarow             foreach  GridViewRow row in GridView Rows                                DataRow dr   dt NewRow                    for  int j   0  j  lt  row Cells Count  j                                          dr GridView HeaderRow Cells j  Text    row Cells j  Text                                    dt Rows Add dr                               Loop for footer             if  GridView FooterRow Cells Count    0                                DataRow dr   dt NewRow                    for  int i   0  i  lt  GridView FooterRow Cells Count  i                                            You have to re-do the work if you did anything in databound for footer                                      dt Rows Add dr                             dt TableName    tb

[c#] Putting GridView data in a DataTable

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