Check if a particular value exists in DataTable (DataSet) using C# .Net

Question

check if variable exists in dataset  please tell me

EmadKhan · Accepted Answer

try like this DataRow rows  dtSelect34Your Data Table Field 3934  What You want to find  343934ifrowsLength gt 0  ResponseWrite34Exists34

EmadKhan · Answer

example  if you have bat field in datatable and you want to find the bats name then do this string batName  34Gray Nickels34DataRow rows  dtSelect34bat3934  batName   343934ifrowsLength gt 0  ResponseWrite34Exists34

EmadKhan · Answer

if u wish to update then do this instead of responsewrite var dt  ViewState34PPDataTable34 as DataTable dt34id34  34Changed34 ViewState34PPDataTable34  dt

Azim · Answer

Hi Pvn Please refer below SampleHTMLltdivgt    Search IdltaspTextBox ID34txtSearchId34 Text34134 runat34server34 gt    ltbr gt    Update valueltaspTextBox ID34txtUpdateValue34 Text34734 runat34server34 gt    ltbr gt    ltaspButton Text34Search and Update value34 runat34server34 OnClick34SearchAndUpdate34 gtltdivgtlthr gtltaspGridView ID34GridView134 runat34server34 gtNamespaceCusing SystemDataVBNetImports SystemDataCodeCprotected void SearchAndUpdateobject sender EventArgs e    DataTable dt  new DataTable    dtColumnsAddRange        new DataColumn3         new DataColumn34Id34 typeofint        new DataColumn34Name34 typeofstring        new DataColumn34Country34typeofstring     dtRowsAdd1 34John Hammond34 34United States34    dtRowsAdd2 34Mudassar Khan34 34India34

Check if a particular value exists in DataTable (DataSet) using C# .Net

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